R250

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England B.S. R250 铜和铜合金-空调和制冷用无缝圆铜管-第1部分：管道系统用管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: R250 / R250

Category	Grade	Standard	Region/Area	Standard Content
Metals	R250	BS EN 12735-1	England	铜和铜合金-空调和制冷用无缝圆铜管-第1部分：管道系统用管

Chemical composition(mass fraction)(wt.%) of the R250

Element	Min	Max	Similar

The data is being updated,

Mechanical Properties of steel grade R250

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)
985 (≥)	168 (≥)	21	44	13	Solution and Aging, Annealing, Ausaging, Q+T,etc	233

Physical Properties of steel grade R250

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	-	-			0.12	-
397	126	-	42.3	121		-
751	-	34	11.2			334	321

Heat Treatment of steel grade R250

Heat treated : 1891°C - 1291°C

Technological Curves of steel grade R250

No Curve

Cross Reference Table (Equivalent Grade) of R250

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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