The open encyclopedia of steel grades
Data sheets, chemical composition, mechanical properties, heat treatment and cross-standard equivalents — DIN · AISI · JIS · GB — for the steels industry actually trades.
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Mold Steel
7 Grades
Tool Steel
61 Grades
Alloy & Engineering Steel
66 Grades
Carbon Steel
60 Grades
Stainless Steel
67 Grades
Pipe & Tube Steel
27 Grades
Structural & HSLA Steel
75 Grades
Wear-Resistant Plate
9 Grades
Most searched grades
1.2311
1.2311 is a prehardened Cr-Mn-Mo plastic mold steel, the European workhorse for injection molds and die holder…
H13
H13 is the global standard hot work tool steel for aluminum die casting and extrusion. Its Cr-Mo-V chemistry r…
D2
D2 is the world-standard high-carbon, high-chromium cold work tool steel. Massive chromium carbides give excep…
4140
4140 is the most popular Cr-Mo engineering steel in the world: a through-hardening grade for shafts, gears, bo…
1.2738
1.2738 is P20 chemistry upgraded with about 1% nickel for through-hardening of very large molds. It keeps hard…
1045
1045 is the world’s most common medium-carbon steel — the default for shafts, hydraulic rods and plates that n…
27SiMn
27SiMn is a Chinese Si-Mn alloy steel specified for hydraulic cylinder tubes and coal-mine hydraulic props — h…
NM400
NM400 is China’s 400 HBW class abrasion-resistant plate (GB/T 24186), the workhorse for mining and earthmoving…
From the guides
1.2311 vs 1.2738: Choosing the Right Prehardened Mold Steel
Both are prehardened P20-family mold steels. The nickel in 1.2738 decides the question — here is when it matters and when 1.2311 is enough.
H13 Heat Treatment Basics: Hardening and Tempering for Die Casting Dies
A practical overview of the H13 (1.2344 / SKD61) hardening cycle — austenitizing, quenching and the double temper that die shops actually run.
Steel Grade Equivalents: How Cross-Standard Substitution Really Works
DIN, AISI, JIS and GB grade names for "the same" steel are rarely identical. This guide explains what equivalent means, where the traps are, and how to substitute safely.