20HG2TS

Weldability without restrictions.

for the manufacture of fittings periodic profile of A-IV (A600) with a diameter of 10 to 32 mm.

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, % Zr, % P, % C, % S, %
GOST 5781-82 95.11–96.96 0.4–0.7 1.5–1.9 0.9–1.2 < 0.3 < 0.3 0.05–0.14 < 0.045 0.19–0.26 < 0.045

Information on suppliers

Physical characteristics

Temperature, °C $$\alpha\cdot 10^{6}$$, $$K^{-1}$$
100 12.3
200 12.3
300 12.5
400 13.1
500 13.5
600 13.9
700 14.2

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Fittings GOST 5781-82 10–18 883 590 6

Technological Properties

Weldability
no limits

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Mn, K
770 835 740 345

Analogues

USA
A 615 Grade 100 [690]

Standards

Standard Description
GOST 5781-82

Description of chemical elements

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

Description of physical characteristics

Parameter Units of measurement Description
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)

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)

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
Mn K