STHA 20

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Korea KS STHA20 Alloy steel boiler and heat exchanger tubes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STHA20 / STHA 20

Category	Grade	Standard	Region/Area	Standard Content
Metals	STHA 20	KS D 3572	Korea	Alloy steel boiler and heat exchanger tubes

Chemical composition(mass fraction)(wt.%) of the STHA 20

Element	Min	Max	Similar

The data is being updated,

Mechanical Properties of steel grade STHA 20

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
377 (≥)	654 (≥)	31	23	31	Solution and Aging, Annealing, Ausaging, Q+T,etc	232

Physical Properties of steel grade STHA 20

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
13	-	-			0.22	-
651	858	-	32.3	114		-
868	-	14	11.2			123	141

Heat Treatment of steel grade STHA 20

Heat treated : 1146°C - 1751°C

Technological Curves of steel grade STHA 20

No Curve

Cross Reference Table (Equivalent Grade) of STHA 20

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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