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1.7779

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America ASME 1.7779 Specification for Seamless Steel Tubes for Pressure Purposes Part 2: Technical Delivery Conditions for Non-Alloy and Alloy Steel Tubes With Specified Elevated Temperature Properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 1.7779 / 1.7779
Category Grade Standard Region/Area Standard Content
Metals 1.7779 ASME SA/EN 10216-2 America Specification for Seamless Steel Tubes for Pressure Purposes Part 2: Technical Delivery Conditions for Non-Alloy and Alloy Steel Tubes With Specified Elevated Temperature Properties

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

Element Min Max Similar
C 0.2200 0.2900 -
Mn 0.6000 0.9000 -
P - 0.0250 -
S - 0.0100 -
Si - 0.4000 -
Ni - 0.3000 -
Cr 0.9000 1.2000 -
Mo 0.1500 0.3000 -
Cu - 0.3000 -
Al - 0.0400 -

Mechanical Properties of steel grade 1.7779

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
318 (≥) 334 (≥) 24 23 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

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
44 - -     0.14 -  
895 333 - 42.3 334   -  
267 - 14 12.2   242 233

Heat Treatment of steel grade 1.7779

Heat treated : 1464°C - 1276°C

Technological Curves of steel grade 1.7779

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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