Hot-Work Tool Steel Selection Guide for Overseas Customers 

Type: topic Created: 2026-08-01 Updated: 2026-08-01 Sources: [[raw/source-panjin-whitepaper]], [[raw/source-virat-h13-vs-h11]], [[raw/source-aobo-die-casting-selection]], [[raw/source-yansen-forging-die]], [[raw/source-lnv-international-specification]], [[raw/source-azom-tungsten-h21-h26]]

Executive Summary

This guide gives overseas buyers (North America, Europe, Southeast Asia, India, the Middle East, Latin America) a practical, decision-tree-driven approach to selecting the right hot-work tool steel. It bundles the four classic questions buyers ask: what's my application, what's my budget, what standard do I quote, and what should I verify before shipping.

The single most important takeaway: H13 / 1.2344 / SKD61 is the global industry default for hot work. If you are unsure, start with H13. ~70% of all hot-work tool steel shipped worldwide is H13 family.

Quick Selection

1.1 The 30-Second Decision (If You're In a Hurry)

1.2 Full Application × Steel Matrix

See: [[die-casting-selection]] · [[forging-die-selection]] · [[extrusion-tooling-selection]]

Part 2: Selection by Buyer Need

Budget-Focused

Best value picks:

P20 (1.2311) - for short-run Zn die casting, holder blocks (prehardened, no HT needed)

5CrNiMo - for large hammer dies, open-die forging (lower alloy = lower cost)

H11 (1.2343) - 10–20% cheaper than H13 for similar applications

H13 conventional (non-ESR) - 20–40% cheaper than H13 ESR for similar performance

Avoid for budget reasons:

ESR premium unless die life justifies it

H21 / H22 / H24 / H26 (expensive, hard to machine)

H41 / H42 / H43 (specialty, long lead time)

2.2 Die-Life-Focused

Top picks:

H13 ESR (1.2344 ESR / 8407) - best overall die life for Al/Mg die casting

H13 + nitriding / PVD coating - surface-engineered for 2–5× die life

H19 - for brass extrusion inserts

PM (powder metallurgy) tool steels - for highest precision and life

2.3 Toughness-Focused

Top picks:

H11 (1.2343) - better toughness than H13, resists cracking

5CrNiMo - highest impact toughness

H13 with reduced V - some mills offer V-reduced H13 variants

2.4 Red-Hardness-Focused

Top picks:

H21 (1.2581) - up to 700°C, most common high-temp choice

H19 - for brass and high-wear hot work

H22 / H24 / H26 - escalating hot hardness

H42 - when heat-checking resistance is also needed

Part 3: Selection by Operating Conditions

3.1Die Temperature × Steel

3.2 Impact Loading

3.3 Water Cooling?

⚠️ Critical warning: Tungsten grades (H21–H26) must NOT be water-cooled during service. This is the single most common mistake overseas buyers make when switching from H13 to H21.

Part 4: International Procurement

4.1 Standard Citation Best Practice

✅ DO:

Specify exact standard + grade + year of issue

Example: AISI H13 per ASTM A681-2015

Example: DIN 1.2344 (X40CrMoV5-1) per EN ISO 4957:2017

Example: JIS SKD61 per JIS G4404:2015

Example: GB 4Cr5MoSiV1 per GB/T 1299-2014

Require mill test certificate (MTC) - EN 10204 3.1 minimum, 3.2 for critical

Specify supplementary requirements:

Hardness range (e.g., annealed ≤ 220 HB; prehardened 30–34 HRC for P20)

Inclusion rating (e.g., ASTM E45 ≤ 1.5 thin / 1.0 heavy)

Ultrasonic testing per ASTM A388 or SEP 1921

Grain size (e.g., ASTM E112 ≥ 7)

Macro-etch test

❌ DON'T:

Don't say "equivalent to H13" - always name a specific standard

Don't ignore the year of issue

Don't accept "mill standard" without naming the underlying spec

Don't accept MTC without batch number and traceability

4.2 Certification & Inspection

Recommended third-party inspectors:

SGS (Switzerland - global presence)

Bureau Veritas (France - strong in Europe, Asia, Africa)

TÜV (Germany - strong in Europe)

DNV (Norway - strong in marine, oil & gas, energy)

Intertek (UK - strong in Americas, Europe, Asia)

CCIC  strong in China exports)

4.3 Packaging & Logistics

Round bars: standard export wooden crates, plastic wrap, end-caps, desiccant

Flat bars / plates: steel banded bundles, foam edge protection

Forgings: individual wrapping + custom crating

Surface protection: anti-rust oil (VCI paper for sea freight)

Documentation with each shipment:

Commercial invoice

Packing list

MTC (EN 10204 3.1 or 3.2)

Certificate of origin (Form A, E, F, RCEP - preferential tariff)

Insurance certificate

Bill of lading / airway bill

4.4 Common Pitfalls

Specifying only "H13 equivalent" → mill may supply off-spec. Always cite the standard.

Ignoring ESR requirement → conventional H13 has more inclusions → shorter die life.

Wrong cross-reference → e.g., asking for "SKD62" which is the rare H12, not the common H13.

No MTC verification → no traceability, no recourse for quality claims.

Unclear tolerance → ± tolerance on dimensions, straightness, surface finish should be specified.

Wrong heat treatment condition → annealed vs prehardened vs hardened - make sure to specify.

Currency and price clause → for large orders, fix currency and add price escalation clause for raw material volatility.

2026-08-01: 初始创建.综合 6 个 raw 来源.