15HSND (15HSND-Sh)

For welded riveted or bolted structures

The elements of welded metal and the various parts, which are requirements of high strength and corrosion resistance with a weight restriction and operates at temperatures from -70 to 450 ° C

Classification

Country Section Category
CIS, Russia, Ukraine Structural steel Low alloy structural steel for welded structures

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % Ni, % As, % P, % C, % S, % N, %
GOST 19281-89 96.357–97.98 0.4–0.7 0.4–0.7 0.6–0.9 0.2–0.4 0.3–0.6 < 0.08 < 0.035 0.12–0.18 < 0.04 < 0.008

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ d5, % Treatment
Sheet GOST 19282-73 5–9 500 350 21
Metal rolling GOST 6713-91 470–685 335–345 290 19–21
Grade GOST 19281-2014 < 140 480 345 21

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
no limits not sensitive loathsome

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Ar1, K
730 885 803 650

Standards

Standard Description
GOST 19281-89

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Cu % Copper
Ni % Nickel
As % Arsenic
P % Phosphorus
C % Carbon
S % Sulfur
N % Nitrogen

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
$$\sigma_{Y}$$ $$MPa$$ Yield strength
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$KCU\cdot 10^{3}$$ $$\frac{J}{m^2}$$ Impact toughness

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
Ar3(Arcm) K
Ar1 K