9H2

Steel is not used for welded structures, prone to temper embrittlement. Flock sensitivity: sensitive. Temperature of critical points: Ac 1 = 756, Ac 3 (Ac m) = 783 .

operating and back-up rolls and two four-high stand sheet mills, cold rolling metal. Workers and forged supporting rolls of sheet mills for hot rolling of metals.

Classification

Country Section Category
CIS, Russia, Ukraine Tool steel Roll tool steel

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, %
OST 24.013.20 - 0 95.19–97 0.25–0.5 0.2–0.7 1.7–2.1 < 0.5 < 0.03 0.85–0.95 < 0.03

Information on suppliers

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
Not applicable for welded structures sensitive inclined

Critical point temperatures

Ac1, K Ac3(Acm), K
756 783

Analogues

Germany USA France United Kingdom
1.2067 L3 Y100C6 BL3

Standards

Standard Description
OST 24.013.20 - 0

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur

Designation of types of weldability

Parameter Units of measurement Description
no limits Welding is performed without heating and without subsequent heat treatment
Boundedly welded Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures

Description of temperatures of critical points

Parameter Units of measurement Description
Ac1 K
Ac3(Acm) K