TOOLING MATERIALS · GRADE-AND-CONDITION CONTROLLED SOURCING

Tool Steels & Special Engineering Steels — Technical Sourcing

Cold-work, hot-work and high-speed tool steels in plate, block, bar, rod, forgings and parts manufactured to drawing.

MNK-G.S.A supports technically controlled sourcing for tools, dies, moulds, wear parts and special engineering components. Commodity structural steel is outside this page. Every inquiry is built around the formal grade, supplied condition, product form, dimensions, heat-treatment plan and documentation.

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Grade Equivalence Requires Control

AISI, EN/Werkstoff and producer designations may be referenced together but are not treated as universal one-to-one equivalents.
Chemistry, cleanliness, melting route, carbide distribution, supplied hardness and heat treatment can materially affect tool performance.
The customer’s governing standard, approved datasheet and final certificate control acceptance.
Proprietary powder-metallurgy grades are sourced under their producer designation and are not relabelled as conventional grades.

Tool-Steel Families

Family	Reference designations	Typical technical context
Cold-work tool steels	AISI D2 / W.-Nr. 1.2379; A2 / 1.2363; O2 / 1.2842 where specified	Blanking, forming, shearing, industrial knives, rolls, punches, dies and wear parts
Hot-work tool steels	AISI H13 / W.-Nr. 1.2344; H11 / 1.2343 where specified	Hot-forming dies, extrusion tooling, die casting, forging and thermally cycled components
Plastic-mould steels	P20 / W.-Nr. 1.2311 or 1.2738; 1.2083 and other customer-defined grades	Mould bases, inserts, cavities and machined tooling; supplied hardness and polishability require confirmation
High-speed steels	M2 / W.-Nr. 1.3343; M42 / 1.3247 and other ISO 4957 grades	Cutting tools, drills, punches and applications requiring hot hardness and wear resistance
Powder-metallurgy and proprietary grades	Producer-defined PM tool steels	High wear, compressive-load or chipping-control requirements; quotation by exact producer grade
Special engineering and wear steels	Customer-specified special grades and hardness-controlled plate	Industrial maintenance and parts to drawing; no commodity construction-steel positioning

Selection note: the list describes sourcing families, not an instruction to substitute one designation for another. Final material selection remains the responsibility of the customer or project engineer.

Supply Forms and Processing

Plate & Block

Hot-rolled or forged plate, sawn block, precision-ground plate and mould block by thickness, width, length, machining allowance, flatness and supplied hardness.

Bar, Rod & Wire

Round, flat, square or special-section bar and rod; drawn or finished wire where covered. State section, length, straightness, surface and annealed, prehardened or finished condition.

Forgings & Rings

Open-die or closed-die forgings, rings, discs and custom blanks with reduction ratio, heat treatment, testing and machining allowance defined by the project.

Machined Parts

Cut blanks, inserts, punches, dies, tooling plates and components to drawing. The manufacturing route can include rough machining, finish machining, grinding, EDM and dimensional inspection.

Heat Treatment & Testing

Annealing, prehardening, hardening and tempering are quoted only against an approved cycle. Hardness, ultrasonic testing, microstructure, decarburization or additional inspection may be specified.

Standards Framework

Standard	Relevant scope	How MNK-G.S.A uses it
ASTM A681-24	Wrought alloy tool-steel bar, plate, sheet, strip, rod, wire and forgings	Formal ASTM grade, product form and supplied condition are retained together
ISO 4957:2018	Non-alloy and alloy cold-work, alloy hot-work and high-speed wrought tool steels	Current edition confirmed in 2023; only grades within its published scope are described as ISO 4957 grades
BS EN ISO 4957:2018	European/UK adoption of the ISO tool-steel framework	Useful for EN/Werkstoff-led RFQs, together with dimensional and delivery standards where applicable

Standards do not eliminate the need to specify cleanliness, melting route, hardness, surface, heat treatment and inspection. Those details are added to the purchase specification when they affect performance.

Application Context

Tool steel inquiries may support stamping, forming, extrusion, die casting, forging, mould making, cutting, rolling, shearing, industrial maintenance and special machinery. The failure mode—abrasive wear, adhesive wear, chipping, cracking, plastic deformation or thermal fatigue—must guide final selection.

RFQ Checklist

Exact designation and governing standard
Plate, block, bar, forging or finished part
Dimensions, machining allowance and surface
Annealed, prehardened or final hardness condition
Heat-treatment and inspection requirements
Quantity, drawing, packing and destination

Related Technical Pages

Mechanical-Test Method References

These general metallic-materials test methods support procurement and inspection planning. The governing steel product standard, purchase specification and agreed acceptance criteria control their applicability.

Technical Sources

The public records define the sourcing framework. The purchased standard, approved producer datasheet, certificate and customer drawing govern the order; protected standard text is not reproduced.

Technical Sources for Sampling and Testing

Mechanical properties and chemical results are meaningful only when the governing specification, sample identity, preparation route and report traceability are aligned with the order.

Send Your Tool-Steel Inquiry

Send the grade, product form, drawing, dimensions, supplied condition or target hardness, quantity, inspection documents and delivery destination.

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