This professional reference explains Material Identification & Codification in an industrial materials-management context.
Rather than treating the subject as an isolated transaction, this reference connects it with the material lifecycle, operating requirements, cost, risk, information flow and management control.
Material Identification & Codification emerged as organizations moved from basic transaction control toward systematic management of availability, cost, quality, risk and information. Its modern application uses standardized processes, data, cross-functional coordination and periodic review.
The purpose is to solve a recurring management need: making sound material decisions while protecting continuity, quality, working capital and operational efficiency.
Establish the requirement and scope → define inputs and responsibilities → apply the approved method → record the result → control exceptions → measure performance → review and improve.
Creates a repeatable professional method, clearer ownership and better management visibility.
Results depend on accurate data, clear responsibility, disciplined execution and periodic review. Professional judgement is required when conditions change, data is incomplete or an item is operationally critical.
An industrial site applies Material Identification & Codification to a recurring material-control problem. The team first establishes the baseline, agrees the data and ownership, implements the defined method and reviews the result through a practical KPI. The decision is documented so that the process can be repeated and audited.
The systematic identification, description, classification and coding of industrial materials so that every item has one controlled identity, consistent specifications, accurate records and reliable traceability through Stores, Purchase, Planning, Inventory and ERP.
Illustrative framework — adapt the sequence, ownership and controls to the organization’s process, risk and operating environment.
Illustrative framework — adapt the sequence, ownership and controls to the organization’s process, risk and operating environment.
In industrial organizations, Material Identification & Codification is part of the broader effort to control the flow of materials, information, money and risk. Modern purchasing evolved from clerical buying toward strategic procurement and cross-functional supply management. The function now connects specification, market intelligence, supplier capability, commercial control, delivery, quality, total cost and business continuity.
Modern purchasing evolved from clerical buying toward strategic procurement and cross-functional supply management. The function now connects specification, market intelligence, supplier capability, commercial control, delivery, quality, total cost and business continuity. The practical test is whether the method helps the organization make a better decision at the right time with traceable assumptions and ownership.
The professional role has moved from transaction processing toward integrated management. Today the responsible team is expected to connect technical requirements, data quality, supply capability, inventory, ERP transactions, cost, risk and performance. Responsibility should be assigned across functions rather than assumed to belong to one department alone.
Identify need → validate specification and material master → source capable suppliers → obtain and evaluate quotations → negotiate and document commercial terms → issue PO/contract → expedite → receive and inspect → close documentation → evaluate supplier performance.
Illustrative example: three quotations are received for a critical bearing. The evaluation compares technical compliance, basic price, freight, taxes, delivery, warranty, payment terms and supplier capability before the commercial decision is recorded.
A paper mill repeatedly buys a critical spare on emergency basis. Review finds late requisitions and weak supplier follow-up rather than only a price problem. Purchase and Stores jointly revise planning parameters, approved sources and expediting responsibility.
Professional review: What would change your decision if demand, lead time, supplier capability, criticality or operating conditions changed?
Material identification is the process of establishing the exact identity and characteristics of a material using its description, technical specification, size, grade, make, model, part number, UOM and other relevant attributes.
Material codification is the systematic assignment of a unique item code to each approved material identity so that the item can be consistently recognized, transacted, purchased, stored, issued, planned and reported throughout the organization.
A good coding system ensures that the same physical requirement does not unnecessarily appear as multiple inventory items under different names, while genuinely different materials remain separately identifiable.
Material identification and codification may cover raw materials, consumables, MRO spares, mechanical items, electrical items, instrumentation items, lubricants, chemicals, packing materials, safety items, tools, office and maintenance supplies, engineering items, capital spares and other controlled inventory.
| Problem | Operational Effect | Management Risk |
|---|---|---|
| Duplicate item codes | Same material appears as multiple SKUs | Excess inventory and fragmented demand |
| Incomplete description | Buyer cannot clearly identify requirement | Wrong purchase or repeated clarification |
| Incorrect UOM | Purchase and issue quantities become inconsistent | Quantity and valuation errors |
| Missing specification | Technically unsuitable material may be supplied | Quality and equipment risk |
| Manufacturer-only description | Equivalent alternatives become difficult to identify | Supplier dependency |
| Uncontrolled item creation | Item master grows unnecessarily | Poor inventory visibility |
A professional item identity should contain enough information to distinguish one material from another without depending unnecessarily on a particular supplier.
| Attribute | Typical Information | Example |
|---|---|---|
| Item Code | Unique organizational identifier | MECH-BRG-6205-2RS |
| Generic Description | Standard material name | Ball Bearing |
| Size | Dimensions or rating | 25 × 52 × 15 mm |
| Type | Design or construction | Deep Groove |
| Grade / Material | Material or quality grade | Chrome Steel |
| Specification | Applicable technical standard | ISO / DIN / ASTM etc. |
| Make / Manufacturer | Approved make where required | SKF / FAG / equivalent |
| Part Number | OEM or manufacturer reference | 6205-2RS |
| UOM | Controlled unit of measure | Nos |
A standard description should normally move from the generic material identity toward the attributes that distinguish the item. The exact sequence should be standardized by the organization and applied consistently within each material family.
For example, instead of maintaining several inconsistent descriptions such as “Bearing 6205”, “SKF Bearing”, “Ball Bearing” and “6205 Bearing”, a controlled description can be structured around the material identity and then supported by manufacturer information where necessary.
| Approach | Example | Use |
|---|---|---|
| Generic identity | Bearing, Deep Groove, 6205, 25×52×15 mm, 2RS | Preferred for general inventory identity |
| Manufacturer attribute | SKF 6205-2RS | Use where make or OEM identity is technically important |
| Part number | OEM P/N ABC-12345 | Essential for proprietary components |
Different organizations use different coding philosophies. The correct choice depends on the number of items, ERP capability, organizational structure, future expansion and master-data governance.
| System | Description | Typical Characteristic |
|---|---|---|
| Sequential | Unique numbers assigned in sequence | Simple and scalable |
| Significant | Code contains meaningful classification information | Human-readable but requires governance |
| Non-significant | Code has no inherent meaning | Stable and less prone to redesign |
| Hybrid | Controlled family prefix plus unique identifier | Common practical approach |
| Segment | Meaning |
|---|---|
| MECH | Material family / discipline |
| BRG | Material class |
| 6205 | Size / model identifier |
| 2RS | Seal / configuration attribute |
Such a structure is only an example. An organization should avoid making the item code unnecessarily long or dependent on attributes that may change frequently. The coding philosophy should be defined as a formal master-data standard.
Before assigning codes, materials should normally be organized into a logical classification hierarchy.
| Level | Example |
|---|---|
| Department | Mechanical |
| Material Group | Bearings |
| Material Class | Deep Groove Ball Bearings |
| Item | 6205-2RS |
| Attributes | 25×52×15 mm, sealed, chrome steel |
Duplicate prevention is one of the most important controls in material master management. A duplicate item can split consumption history, increase stockholding and distort planning parameters.
Before creating a new item, search using multiple combinations rather than only an exact description.
The Unit of Measure must represent how the material is purchased, stored, issued and reported. Where purchase and stock units differ, controlled conversion factors should be maintained.
| Material | Possible Stock UOM | Important Control |
|---|---|---|
| Bearings | Nos | One physical bearing = one stock unit |
| Lubricant | Litre / Kg | Density and packaging conversion where relevant |
| Fasteners | Nos / Box | Controlled box quantity |
| Steel plate | Kg / Nos | Dimension and weight basis must be clear |
| Cable | Metre | Length conversion and cutting control |
The required attributes depend on the material family. A coding system should not force every material into the same attribute structure.
| Material Family | Typical Attributes |
|---|---|
| Bearings | Bearing type, bore, outside diameter, width, seal, clearance, make |
| Motors | Power, voltage, frequency, RPM, frame, mounting, enclosure, efficiency |
| Valves | Type, size, pressure class, body material, end connection, trim |
| Cables | Conductor size, cores, insulation, voltage grade, construction |
| Fasteners | Type, diameter, length, thread, grade, finish |
| Lubricants | Product type, viscosity, grade, application, pack size |
| Chemicals | Concentration, grade, composition, pack size, applicable standard |
Manufacturer and OEM references are important identifiers but should be used appropriately. A manufacturer part number may identify a specific component, while the generic material identity determines whether an equivalent item can be considered.
For critical proprietary equipment, the OEM part number may be essential. For standard industrial items, the organization may permit technically approved equivalents subject to engineering and procurement policy.
Material master management should not stop after creating item codes. Existing items should periodically be reviewed for opportunities to standardize equivalent materials and eliminate unnecessary variety.
| Field | Purpose |
|---|---|
| Item / Material Code | Unique transaction identity |
| Description | Standard material identification |
| Material Group | Classification and reporting |
| UOM | Quantity control |
| Manufacturer | Approved source identification |
| Part Number | OEM / manufacturer traceability |
| Specification | Technical identity |
| ABC / FSN / VED | Inventory control segmentation |
| Lead Time | Planning and replenishment |
| Min / Max / ROP | Inventory control parameters |
| Criticality | Service-risk control |
| Valuation Data | Inventory and financial reporting |
Material master data should have clear ownership. The person creating the item should not necessarily be the only person responsible for technical validation, approval and ongoing governance.
| Function | Typical Responsibility |
|---|---|
| Requesting Department | Define business requirement and technical need |
| Engineering / Technical | Validate specification and interchangeability |
| Stores / Materials | Identification, classification and inventory implications |
| Purchase | Supplier and commercial implications |
| ERP / Master Data | System creation and field governance |
| Approving Authority | Authorize creation, modification or blocking |
| Check | Question |
|---|---|
| Identity | Can the material be uniquely identified? |
| Duplicate | Has the existing master been searched thoroughly? |
| Description | Is the description complete and standardized? |
| Specification | Are all critical technical attributes available? |
| UOM | Is the stock UOM correct and controlled? |
| Classification | Is the material group correct? |
| Manufacturer | Is the make / OEM information required and recorded? |
| Part Number | Is the manufacturer or OEM part number available where applicable? |
| Planning | Can the item be correctly classified for inventory planning? |
| Approval | Has the item passed the required authorization? |
A practical item-master control sheet can contain the following fields:
A duplicate-review workbook can additionally compare standardized description, specification, manufacturer, part number, size, UOM and other technical attributes before an item is approved.
Number of duplicate or near-duplicate items identified relative to the reviewed item population.
Percentage of reviewed item records meeting defined master-data standards.
Time from approved item request to controlled ERP availability.
Extent to which technically equivalent materials have been standardized.
In an MRO environment, a single equipment item may generate hundreds of material records over its life. Bearings, seals, belts, motors, valves, electrical components, instruments, lubricants and fasteners can easily develop inconsistent descriptions when item-master governance is weak.
A disciplined identification and codification system allows Stores, Purchase, Maintenance, Engineering and Planning to work from the same material identity. This improves historical consumption analysis, supplier comparison, replenishment planning, inventory rationalization and material availability decisions.
Stores Management · Bin & Location Management · Inventory Management · ERP & MIS · Material Planning