HFS 320

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India IS HFS320 Carbon steel boiler tubes and superheater tubes. Part 3: Specific requirements for hot finished seamless carbon steel tubes and superheater tubes for design metal metal temperature not exceeding 454°C and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HFS320 / HFS 320

Category	Grade	Standard	Region/Area	Standard Content
Metals	HFS 320	IS 1914-3	India	Carbon steel boiler tubes and superheater tubes. Part 3: Specific requirements for hot finished seamless carbon steel tubes and superheater tubes for design metal metal temperature not exceeding 454°C

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

Element	Min	Max	Similar

The data is being updated,

Mechanical Properties of steel grade HFS 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)
459 (≥)	953 (≥)	14	23	41	Solution and Aging, Annealing, Ausaging, Q+T,etc	331

Physical Properties of steel grade HFS 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
24	-	-			0.22	-
713	719	-	31.3	214		-
549	-	33	43.2			131	412

Heat Treatment of steel grade HFS 320

Heat treated : 1817°C - 1117°C

Technological Curves of steel grade HFS 320

No Curve

Cross Reference Table (Equivalent Grade) of HFS 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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