12KH7G3SL steel is used: for the manufacture of castings for critical heavily loaded parts with wall thickness up to 100 mm, operating in conditions of static and dynamic loads.

Standards

Name	Code	Standards
Steel castings	В82	GOST 977-88

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²
Normalization at 940-960 °C + vacation at 650-720 °C, air cooling + tempering with 880-900 °C + vacation at 200-250 °C air cooling
100	≥1079	≥1324	≥9	≥40	≥589

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
y	The relative narrowing
KCU	Toughness

Steel 12KH7G3SL

Designation

Description

Standards

Mechanical properties

Description mechanical marks

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