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A 691 Grade 2 1/4 CR

Favorite Datasheet
A 666 S21460 A 732 Grade 14Q
#214

Description

USA SAE A 691 (2009), A 691 Grade 2 1/4 CR Specialsteel Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: A 691 Grade 2 1/4 CR
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 691 Grade 2 1/4 CR Precipitation-Hardening SAE USA Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures

Chemical composition(mass fraction)(wt.%) of the A 691 Grade 2 1/4 CR

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo B Zr
≤0.05 ≤0.20 ≤0.50 ≤ ≥ ≤ ≥ ≤remaining 15.00 -17.00 4.00 -5.00 ≤ ≥ ≤0.50 2.00 -4.00 ≤ ≥ ≤0.50 ≤0.006 ≤0.05

Mechanical Properties of steel grade A 691 Grade 2 1/4 CR

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)
775 (≥) 673 (≥) 34 41 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade A 691 Grade 2 1/4 CR

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 - -     0.11 -  
496 528 - 31.3 411   -  
664 - 24 43.2   321 112

Heat Treatment of steel grade A 691 Grade 2 1/4 CR

Heat treated : 1427°C - 1965°C

Technological Curves of steel grade A 691 Grade 2 1/4 CR

Cross Reference Table (Equivalent Grade) of A 691 Grade 2 1/4 CR

Grade Standard Country Application
S21400
S21460
214
214
S21400
S21400
UNS G12144
UNS G12144
UNS W21418
UNS W74214
UNS K21451
UNS K21450
UNS K21485
UNS W82141
SS14:2140
SS14:2140
SS14:2140

Relevant standard of A 691 Grade 2 1/4 CR

A 691 (2009) Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures A-691-(2009).pdf
A 666 S21460 A 732 Grade 14Q
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