Engineering inputs

Material Library

Traceable, versioned material data with provenance — feeds every downstream prediction.

4 grades · web-ref-2026-10

42CrMo4

EN 10083-3 (1.7225) · Normalized / QT

Reference (unverified)

CHEMISTRY WINDOW

C 0.38–0.45 · Mn 0.6–0.9 · Cr 0.9–1.2 · Mo 0.15–0.3

INITIAL CONDITION

Normalized / QT

Ac1

745 °C

Ac3

790 °C

300 °C

80 °C

Hardenability & data governance

High. Jominy (EN 10083-3): HRC ~61 @1.5 mm → ~45 @50 mm from quenched end. Every recommendation stores the material-data version (web-ref-2026-10) used at optimization time.

Material properties

Core model features

Density7.85 g/cm³

Thermal conductivity42 W/m·K

Elastic modulus210 GPa

Specific heat460 J/kg·K

Typical quenchOil / polymer

Hardness target (QT)48–52 HRC

Library records

Search, compare and trace materials (live data-access layer)

Grade	Standard	Family	Typical quench	Ms	CCT/TTT	Status
42CrMo4	EN 10083-3 (1.7225)	Low-alloy Cr-Mo heat-treatable steel	Oil or polymer (water possible for small sections)	300 °C	Available	Reference
20CrMnTi	GB/T 3077 (A26202)	Case-hardening (carburizing) steel	Oil (carburize 930–950 °C → quench 870 °C oil)	360 °C	Available	Reference
H13	AISI H13 (1.2344 / 4Cr5MoSiV1)	Hot-work tool steel (air-hardening)	Air / pressurized gas / warm oil (hardening 1000–1050 °C)	340 °C	Available	Reference
52100 / 100Cr6 / GCr15	AISI 52100 (1.3505 / GB GCr15)	High-carbon through-hardening bearing steel	Oil (harden 830–870 °C → temper 150–180 °C)	200 °C	Available	Reference