S 149

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England B.S. S149 Specification for 1.75% nickel-chromium-molybdenum steel bars for the manufacture of forged bolts and forged nuts and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S149 / S 149

Category	Grade	Standard	Region/Area	Standard Content
Metals	S 149	BS 2S 149	England	Specification for 1.75% nickel-chromium-molybdenum steel bars for the manufacture of forged bolts and forged nuts

Chemical composition(mass fraction)(wt.%) of the S 149

Element	Min	Max	Similar

The data is being updated,

Mechanical Properties of steel grade S 149

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)
238 (≥)	417 (≥)	41	24	12	Solution and Aging, Annealing, Ausaging, Q+T,etc	344

Physical Properties of steel grade S 149

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
34	-	-			0.24	-
439	962	-	41.3	141		-
373	-	33	11.2			233	334

Heat Treatment of steel grade S 149

Heat treated : 1272°C - 1699°C

Technological Curves of steel grade S 149

No Curve

Cross Reference Table (Equivalent Grade) of S 149

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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