10H12ND (0H12ND)

Production elements of welded structures working wheels of hydraulic turbines, water turbines parts, working in conditions of cavitation damage, details of steam and gas turbines

Classification

Country Section Category
CIS, Russia, Ukraine Corrosion-resistant alloys and steels Corrosion-resistant heat-resistant steel

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % Ni, % P, % C, % S, %
OST 108.958.04 - 85 82.75–85.8 < 0.4 0.3–0.6 12–13.5 0.8–1.1 1.1–1.5 < 0.025 < 0.1 < 0.025

Information on suppliers

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Forgings 207–255

Technological Properties

Weldability
Boundedly welded

Standards

Standard Description
OST 108.958.04 - 85

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Cu % Copper
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