TW 320

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Korea KS TW320 Welded steel tubes for pressure purposes-Technical delivery conditions-Part 1:Unalloyed steels tubes with specified room temperature properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: TW320 / TW 320

Category	Grade	Standard	Region/Area	Standard Content
Metals	TW 320	KS D ISO 9330-1	Korea	Welded steel tubes for pressure purposes-Technical delivery conditions-Part 1:Unalloyed steels tubes with specified room temperature properties

Chemical composition(mass fraction)(wt.%) of the TW 320

Element	Min	Max	Similar
C	-	0.1600	-
Mn	0.3000	0.7000	-
P	-	0.0400	-
S	-	0.0400	-

Mechanical Properties of steel grade TW 320

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)
845 (≥)	512 (≥)	32	42	13	Solution and Aging, Annealing, Ausaging, Q+T,etc	114

Physical Properties of steel grade TW 320

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
41	-	-			0.44	-
391	784	-	41.3	124		-
576	-	44	32.2			212	132

Heat Treatment of steel grade TW 320

Heat treated : 1235°C - 1525°C

Technological Curves of steel grade TW 320

No Curve

Cross Reference Table (Equivalent Grade) of TW 320

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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