34HN1MA (34HN1M)

shafts, rotors, steam turbine wheels, shafts, gears, couplings, gears and other special responsibility heavy duty parts operating at temperatures up to 500 degrees C

Classification

Country Section Category
CIS, Russia, Ukraine Structural steel Alloyed structural steel

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
TU 108-1028-81 94.665–96.23 0.17–0.37 0.5–0.8 1.3–1.7 1.3–1.7 < 0.03 0.3–0.4 < 0.035 0.2–0.3

Information on suppliers

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
Difficult to weld sensitive loathsome

Analogues

Germany USA
Almenit 6582 MIL S-5000 (G 43400)

Standards

Standard Description
TU 108-1028-81

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
Mo % Molybdenum

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