03H17N14M3 (ZI66)

Weldability without restrictions. The hardness of the forging is 03H17N14M3 (GOST 25054−81) HB 10 -1 = 179 MPa.

welded structures operating in aggressive environments at elevated temperatures up to -196 ° C; austenitic steel

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
GOST 5632-72 61.415–67.5 < 0.4 1–2 16–18 13–15 < 0.035 < 0.03 < 0.02 2.5–3.1

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Physical characteristics

Temperature, °C $$\rho$$, $$\frac{kg}{m^3}$$
20 8000

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % Treatment
Round GOST 5949-75 Ø 60 490 196 40 Hardening of 1070-1100 ° C, cooling water
Forgings GOST 25054-81 470 176 35–40 45–55
Sheet GOST 7350-77 fat 490 196 40 Hardening of 1080-1100 ° C, cooling water
Sheet GOST 5582-75 thin 490 196 40 Hardening of 1030-1070 ° C, air

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Round 0–0

Technological Properties

Weldability
no limits
03H17N14M3 / Aloro

Standards

Standard Description
GOST 5632-72
TU 14-1-240-72
TU 14-1-1154-74
TU 14-1-1541-75
TU 14-1-2144-77
TU 14-1-692-73
GOST 5582-75
TU 14-1-2132-77
TU 14-1-2134-77
TU 14-1-1183-74
TU 14-3-396-75

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

Description of physical characteristics

Parameter Units of measurement Description
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\sigma_{P}$$ $$MPa$$ Proportionality limit
$$\epsilon_L$$ % Elongation at break (longitudinal)
$$\psi$$ % Reduction in cross section on fracture

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