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B 729 N08020

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B 475 N08020 N08020
#20Cb-3 #N08020

Description

USA SAE B 729 (2009), B 729 N08020 Specialsteel Standard Specification for Seamless UNS N08020, UNS N08026, and UNS N08024 Nickel-Alloy Pipe and Tube and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: B 729 N08020
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel B 729 N08020 Austenite SAE USA Standard Specification for Seamless UNS N08020, UNS N08026, and UNS N08024 Nickel-Alloy Pipe and Tube

Chemical composition(mass fraction)(wt.%) of the B 729 N08020

C Mn Si P S Cr Ni Mo Cu Nb
≤0.07 ≤2.00 ≤1.00 ≤0.045 ≤0.035 19.00 -21.00 32.00 -38.00 2.00 -3.00 3.00 -4.00 8×C％ -1.00

Mechanical Properties of steel grade B 729 N08020

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)
741 (≥) 296 (≥) 31 23 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade B 729 N08020

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
14 - -     0.42 -  
856 777 - 22.3 113   -  
185 - 24 32.2   121 132

Heat Treatment of steel grade B 729 N08020

Heat treated : 1183°C - 1115°C

Technological Curves of steel grade B 729 N08020

Cross Reference Table (Equivalent Grade) of B 729 N08020

Grade Standard Country Application
20Cb-3,20Mo-4,20Mo-6
N08020
N08020

Relevant standard of B 729 N08020

B 729 (2009) Standard Specification for Seamless UNS N08020, UNS N08026, and UNS N08024 Nickel-Alloy Pipe and Tube B-729-(2009).pdf
B 475 N08020 N08020
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Jiangyou Longhai Special Steel Co.,Ltd.

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