1.7779

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Germany DIN 1.7779 压力钢- 交货技术条件 - 第2部分：规定高温性能的非合金和合金钢管无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 1.7779 / 1.7779

Category	Grade	Standard	Region/Area	Standard Content
Metals	1.7779	DIN EN 10216-2	Germany	压力钢- 交货技术条件 - 第2部分：规定高温性能的非合金和合金钢管无缝钢管

Chemical composition(mass fraction)(wt.%) of the 1.7779

Element	Min	Max	Similar
V	0.4500	0.5500	-
Si	0.1500	0.3500	-
S	-	0.0200	-
P	-	0.0250	-
Mo	0.5000	0.6000	-
Mn	0.3000	0.5000	-
Cr	3.0000	3.3000	-
C	0.1700	0.2300	-

Mechanical Properties of steel grade 1.7779

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)
477 (≥)	522 (≥)	33	44	22	Solution and Aging, Annealing, Ausaging, Q+T,etc	441

Physical Properties of steel grade 1.7779

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	-	-			0.31	-
338	863	-	21.3	422		-
991	-	13	42.2			331	114

Heat Treatment of steel grade 1.7779

Heat treated : 1464°C - 1865°C

Technological Curves of steel grade 1.7779

No Curve

Cross Reference Table (Equivalent Grade) of 1.7779

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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