Board B Grade (medium value board) buying scrap price

Introduction, Construction, Components, and Recycling Value

Introduction to B Grade Circuit Boards

This means that an Xbox motherboard, a Sega Saturn motherboard, a lower-grade telecommunications board, a plastic multi-socket server motherboard, or an older desktop motherboard may receive the same B Grade purchasing rate when each board meets the required classification and inspection conditions. The original retail price, brand recognition, age, and operational status do not independently determine the recycling grade.

B Grade is positioned below A Grade and above C Grade. It contains boards that retain useful quantities of copper, gold-bearing contacts, integrated circuits, multilayer ceramic capacitors, plated connectors, and other recoverable materials but generally have lower precious-metal concentrations and lower semiconductor density than A Grade, A+ Grade, S Grade, or SS Grade boards.

According to the Ohata classification standard, representative B Grade products include:

• Low-grade telecommunications boards

• Metal multi-socket server motherboards

• Plastic multi-socket server motherboards

• High-grade peripheral boards

• Selected desktop motherboards with non-metal plastic CPU sockets

• Non-Apple laptop motherboards with one qualifying gold-tab BGA

• Expansion cards without qualifying gold-tab BGA packages and without iron brackets

• Xbox and Sega Saturn family game machine boards

• Boards featuring plastic connector ends

These examples describe common B Grade product families, but they are not an exhaustive list. A board from another product category may also qualify when its construction, component population, recoverable material content, socket design, connector arrangement, and overall recycling characteristics correspond to the B Grade standard.

General Board Construction

Most B Grade circuit boards are manufactured on multilayer FR-4 fiberglass substrates. Internal copper layers distribute power, ground, and electrical signals between processors, memory devices, controllers, expansion interfaces, and external connectors. Although their construction is usually less complex than that of industrial automation, advanced telecommunications, or premium server boards, B Grade boards remain significantly more sophisticated than ordinary appliance control boards.

Typical construction features include:

• Moderate multilayer PCB construction

• Medium integrated-circuit density

• One or more principal processor or controller packages

• Plastic or cost-efficient processor socket assemblies

• Memory, expansion, storage, or communication connectors

• Voltage-regulation circuits

• Copper-bearing inductors and coils

• Surface-mounted capacitors and resistors

• Plated internal and external connector contacts

• Standard commercial-quality soldering

B Grade boards may contain large unpopulated areas or a less compact component layout than premium laptop, industrial, or telecommunications boards. However, they normally retain enough semiconductor coverage, connector content, and multilayer construction to provide consistent material-recovery value.

Common Components

The exact components vary according to the original application. A desktop motherboard may contain a removable CPU socket, chipset packages, memory slots, expansion connectors, storage interfaces, rear I/O ports, voltage regulators, and a BIOS device. A game-console board may instead use soldered CPU and GPU packages, memory arrays, audio processors, optical-drive interfaces, controller ports, and proprietary plastic connectors.

A lower-grade telecom board may include communication controllers, memory devices, line-interface components, network transformers, relays, optical or copper communication interfaces, and power-management circuitry. A multi-socket server board may contain several processor sockets but still remain B Grade when its socket construction, IC density, connector quality, and overall recoverable value do not satisfy a higher-grade server-board category.

Common B Grade components include:

• Plastic CPU sockets

• Soldered BGA processors

• Graphics or multimedia processors

• Northbridge and southbridge chipsets

• Memory controllers and memory ICs

• BIOS, ROM, or flash devices

• Ethernet and communication controllers

• Super I/O controllers

• Audio codecs

• Expansion-card connectors

• Memory sockets

• Storage connectors

• Plastic power and signal connectors

• MOSFETs, inductors, and voltage regulators

• Multilayer ceramic capacitors

Recycling Value

The principal recycling value of B Grade boards comes from the combined material content of the complete PCB rather than from one visible connector or chip.

Copper normally represents the largest recoverable metal by weight. It is found in internal PCB layers, signal traces, ground planes, power-distribution paths, inductors, transformer windings, connector structures, and voltage-regulation sections.

Gold may be present in CPU pins, socket contacts, memory contacts, expansion connectors, communication ports, plated test points, and microscopic bond wires inside integrated circuits. However, B Grade boards usually contain less extensive gold plating than premium telecom, industrial, legacy ceramic-CPU, or high-density enterprise boards.

Additional recoverable materials may include silver in selected contacts and solder materials, palladium in multilayer ceramic capacitors, nickel beneath plated connector surfaces, tin in solder, and aluminum in removable heatsinks.

The value of B Grade material is therefore based on repeatable average recovery across properly sorted volumes. A complete shipment of correctly separated B Grade boards provides a more predictable refining result than an unsorted load containing premium boards, low-grade appliance boards, power-supply boards, cables, batteries, metal housings, and broken PCB fragments.

Ohata B Grade Classification, Identification Guide

Classification Is Based on Grade, Not Model

The most important principle is that Ohata purchases circuit boards according to their verified recycling classification. The model name is used to assist identification, but it does not create a unique scrap price by itself.

For example, different revisions of Xbox or Sega Saturn motherboards may have different PCB layouts, processor packages, connector arrangements, and production dates. When those boards satisfy the same B Grade requirements and are delivered in equivalent condition, they are purchased according to the B Grade rate rather than separate model-specific rates.

Similarly, a plastic multi-socket server board and a low-grade telecommunications board may look completely different. One may have several CPU sockets, while the other may contain communication processors and numerous connectors. They can nevertheless share the same classification when their overall recoverable-material profiles correspond to B Grade.

The official Ohata standard defines B Grade as medium-value electronic boards with useful recoverable metals, moderate electronic complexity, and lower overall precious-metal concentrations than higher classifications.

Primary Identification Factors

Inspectors should examine the complete assembly rather than making a decision from one visible component. Important identification factors include:

Intended application:
The board’s original use helps establish an initial classification range. Lower-grade telecom equipment, entry-level servers, commercial peripheral devices, older desktops, and selected game consoles are common B Grade sources.

CPU socket configuration:
Selected non-metal plastic CPU sockets may support B Grade classification. A large premium server socket, a modern metal-retention LGA socket, a legacy ceramic multi-CPU configuration, or a heavily integrated BGA design may indicate another grade.

Integrated-circuit density:
B Grade boards normally contain a moderate semiconductor population. They have more electronic complexity than simple appliance controls but less component coverage than high-density industrial, Apple logic, premium telecom, or advanced enterprise boards.

Connector quality:
Memory sockets, expansion interfaces, communication connectors, storage ports, and plastic connector ends contribute to classification. However, the presence of one gold-colored connector does not automatically make a board high grade.

PCB construction:
Inspectors consider PCB thickness, multilayer construction, copper distribution, component population, solder quality, and overall engineering complexity.

Board completeness:
Major processors, chipsets, controller ICs, sockets, and original connectors should remain attached. A stripped PCB is not equivalent to a complete B Grade assembly.

Recognizing Common B Grade Categories

Lower-grade telecommunications boards generally contain communication functions but lack the dense BGA population, large switching ASICs, extensive memory arrays, and premium connector systems associated with SS Grade or higher-value telecom material.

Metal or plastic multi-socket server motherboards may qualify when their overall semiconductor density and connector value remain within the medium-grade range. The number of sockets alone does not determine the grade. Inspectors must also evaluate socket type, installed processors, PCB construction, memory architecture, chipset density, and board completeness.

Selected desktop motherboards with qualifying plastic CPU sockets may fall within B Grade, particularly older designs with separate chipset packages, multiple memory connectors, expansion slots, and substantial support circuitry. The CPU should remain installed when the buying standard specifies a complete-with-CPU condition.

A non-Apple laptop motherboard with one qualifying gold-tab BGA package may be classified as B Grade, while boards with stronger BGA characteristics may qualify for a higher grade and boards without the required characteristics may fall lower.

Xbox and Sega Saturn boards are representative B Grade family-game-machine boards under the supplied standard. They usually have soldered processors, moderate IC density, memory devices, proprietary plastic connectors, and multilayer construction without a large removable CPU socket.

Avoiding Misclassification

A large board is not automatically high grade, and a small board is not automatically low grade. Size must be considered together with component density, connector content, PCB construction, application, and completeness.

A board should not be upgraded simply because it is old, comes from a server, or has several sockets. Likewise, one visible gold connector, one BGA processor, or one ceramic component is not enough to determine the complete classification.

B Grade should also be distinguished from Appliance Board B. Despite the similar wording, Ohata B Grade computer and commercial electronic boards are not the same category as low-value household-appliance or automotive control boards.

Recoverable Materials, Buying Standards, and Handling

Recoverable Materials

Copper is recovered from internal PCB planes, traces, power circuits, coils, inductors, transformers, connector assemblies, and grounding structures. Because much of the copper is hidden inside the multilayer board, visual appearance alone does not reveal the total copper content.

Gold-bearing areas may include CPU pins, socket contacts, memory connectors, expansion interfaces, controller ports, edge contacts, and bond wires inside semiconductor packages. The concentration is moderate rather than premium.

Silver may be recovered from selected contacts, switches, relays, and solder materials. Palladium may be present in small quantities within multilayer ceramic capacitors. Nickel, tin, aluminum, and other base metals also contribute to total material recovery.

Preferred Buying Condition

Electrical functionality is generally not required. A non-working circuit board may still qualify for B Grade because it is purchased primarily for material recovery. Physical completeness and safe handling condition are more important than whether the original equipment powers on.

Preferred boards should be:

• Structurally complete

• Dry and reasonably clean

• Free from severe corrosion

• Free from heavy mud, oil, or chemicals

• Retaining major processor and chipset packages

• Retaining original sockets and connectors

• Free from severe fire damage

• Free from major PCB fractures

• Separated from unrelated lower-grade material

The detailed inspection standard emphasizes completeness, connector integrity, socket configuration, multilayer construction, and moderate semiconductor density. Missing chipsets, broken sections, corrosion, fire damage, battery leakage, water damage, and chemical contamination can reduce value or prevent acceptance.

Items That May Normally Be Removed

Non-board accessories may generally be removed when this can be done without damaging the PCB. Examples include:

• Aluminum heatsinks

• Cooling fans

• Steel mounting brackets

• Plastic airflow guides

• External cables

• Loose screws

• Metal chassis parts

• Replaceable RAM modules

• Removable expansion cards

• CMOS batteries

These items should be recycled through their appropriate material streams. However, removing a heatsink must not result in removal or damage of the processor, chipset, BGA device, or nearby components.

Components That Should Remain

Processors required by the complete-board buying condition should remain installed. Major chipset packages, communication controllers, graphics processors, BIOS devices, memory controllers, voltage-regulation components, memory sockets, expansion connectors, storage ports, and original I/O assemblies should also remain attached.

A board stripped of major ICs or connector banks contains less recoverable material and cannot be treated as equivalent to a complete B Grade board.

Rejected or Downgraded Conditions

Ohata may reject boards that create safety, contamination, or processing risks. Examples include:

• Empty PCBs with major components removed

• Boards with chipset ICs removed

• Severely burned or carbonized boards

• Boards contaminated with hazardous chemicals

• Oil-saturated material

• Heavy battery-acid corrosion

• Excessive mud, grease, or foreign matter

• Wet boards that cannot be handled safely

• Boards mixed with municipal garbage

• Unidentified hazardous residues

• Pulverized or severely fragmented PCB material

Other conditions may result in downgrading rather than complete rejection. These include a missing CPU, removed connectors, broken corners, cracked PCB layers, heavy oxidation, limited water damage, cut expansion slots, missing rear I/O assemblies, or excessive solder modification.

Mixed-grade loads may also be purchased at a reduced mixed-material rate because they require additional sorting, identification, inspection, and handling. B Grade boards should not be mixed with appliance boards, batteries, wires, plastic housings, power-supply boards, metal chassis, or garbage.

Boards should be stored indoors in dry containers, stacked flat, protected from rain and impact, and separated according to grade and condition.

Comparison, and Official Ohata Classification

Comparison with Higher Grades

A Grade boards generally contain stronger component density, better gold-bearing connector coverage, or more valuable product architecture. Examples may include large single-socket server boards, selected non-Apple laptop motherboards, premium expansion cards, and other high-quality computer boards.

A+ Grade includes more advanced industrial and enterprise products, such as PLC CPU boards, CNC controllers, robotics boards, medical control boards, Apple logic boards, and qualifying large multi-processor server motherboards.

S, SS, and SSS Grades are reserved for increasingly premium materials, including legacy multi-ceramic-CPU boards, high-density telecommunications systems, enterprise networking hardware, and specialized military or aerospace electronics.

B Grade does not require these premium characteristics. Its value comes from moderate but consistent quantities of recoverable materials.

Comparison with Lower Grades

C Grade boards generally have reduced IC density, fewer qualifying components, trimmed gold-finger sections, lower connector value, or less favorable socket configurations.

D Grade commonly includes later-generation cost-optimized desktop boards, low-grade peripheral boards, boards with oversized cooling hardware, and products with limited precious-metal-bearing areas.

Appliance boards generally contain simpler control electronics, more power components, fewer data-processing ICs, and lower precious-metal concentrations.

B Grade occupies the practical middle position between these groups. It provides better recovery potential than ordinary lower-grade computer and appliance boards without reaching the premium characteristics of A Grade and above.

Pricing Principle

The reference market trend supplied for this category is:

B Grade Market Trend Price: USD 4.9 per lb

This reference does not create a guaranteed price for every shipment. The final purchasing price may be adjusted according to market conditions, material quantity, board completeness, contamination, attached non-board material, mixed-grade content, and physical inspection. Ohata’s purchasing guidance also states that final prices depend on material type, condition, quantity, completeness, and current market conditions.

However, the core classification principle remains consistent:

All circuit boards that satisfy the official B Grade technical and inspection standards are purchased under the B Grade category, regardless of their individual model names.

An Xbox board is not priced as B Grade merely because it carries the Xbox name. It must remain complete and satisfy the relevant inspection conditions. Likewise, a server, telecom, laptop, desktop, peripheral, or game-console board from another manufacturer may qualify when its engineering characteristics and recoverable-material profile match the same standard.

Official Ohata Classification Statement

Official Classification: Ohata B Grade Board Scrap

B Grade includes medium-value computer, telecommunications, server, peripheral, and family-game-machine circuit boards that exhibit moderate integrated-circuit density, commercially reliable multilayer PCB construction, useful copper and precious-metal-bearing components, and greater recovery value than standard lower-grade electronic boards.

Qualification is based on the complete physical characteristics of the received board—not solely on manufacturer, model, equipment age, original purchase price, or operational status.

For full B Grade consideration, the material should retain its principal processors, chipset devices, controllers, sockets, connectors, and PCB structure. It should be reasonably clean, dry, safe to handle, and separated from lower-grade or unrelated electronic waste.

When these requirements are satisfied, all qualifying products are treated consistently as B Grade material and purchased according to the applicable Ohata B Grade price.

View more Ohata's circuit board recycling classifications

Board SS Grade (high value telecom Board)

Board S Grade (high-end computer Board)

Board A+ Grade (Industrial and enterprise Board)

Board A Grade (premium computer Board)

Board B Grade (medium value board)

Board C Grade (Lower Premium Board)

Board D Grade (Lower computer Board)