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321F20

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Z6CNT18.12B Z6CNNb18.12B
#Z6CNT18 #12B #321F20

Description

France AFNOR NF A 49-214, 321F20 Specialsteel Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 321F20
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 321F20 AFNOR France Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery

Chemical composition(mass fraction)(wt.%) of the 321F20

C Si Mn P S Cr Ni Mo B Ti
0.04 -0.08 ≤1.00 ≤2.00 ≤0.040 ≤0.030 17.00 -19.00 11.00 -13.00 ≤ ≥ 0.0015 -0.0060 4×C -0.60

Mechanical Properties of steel grade 321F20

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)
335 (≥) 214 (≥) 34 41 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade 321F20

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 - -     0.24 -  
386 883 - 33.3 114   -  
219 - 14 34.2   113 223

Heat Treatment of steel grade 321F20

Heat treated : 1259°C - 1341°C

Technological Curves of steel grade 321F20

Cross Reference Table (Equivalent Grade) of 321F20

Grade Standard Country Application
Z6CNT18-10
Z6CNT18-10
Z6CNT18-10B
Z6CNT18.12B
AMS 6512B
Z6CNNb18-12B
Z6CNNb18-12B
Z6CNNb18.12B
20X12BHMΦ
15X12BHMΦ
18X12BMBΦP
A35-586 321F20

Relevant standard of 321F20

NF A 49-214 Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery NF-A-49-214.pdf
Z6CNT18.12B Z6CNNb18.12B
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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