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20a

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X5CrNiMo17-12-3 ISO X2CrNi18-9
#20a

Description

ISO ISO 20a ISO standard thermal deformation of stainless steel and 20a Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 20a
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 20a ISO ISO ISO standard thermal deformation of stainless steel
1Cr18Ni9
1Cr18Mn10Ni5Mo3N
1Cr17Ni7
Y1Cr18Ni9Se
1Cr17Mn6Ni5N
1Cr18Mn8Ni5N
0Cr19Ni9N
00Cr18Ni10N
1Cr18Ni12
X5CrNiMo17-12-3

Chemical composition(mass fraction)(wt.%) of the 20a

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) N(%)
Max 0.070 Max 1.00 Max 2.00 Max 0.045 Max 0.030 16.5-18.5 10.5-13.0 2.50-3.00 Max 0.11

Mechanical Properties of steel grade 20a

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)
791 (≥) 996 (≥) 44 32 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade 20a

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
24 - -     0.14 -  
134 936 - 12.3 222   -  
874 - 12 24.2   322 441

Heat Treatment of steel grade 20a

Heat treated : 1392°C - 1161°C

Technological Curves of steel grade 20a

Cross Reference Table (Equivalent Grade) of 20a

Grade Standard Country Application
20a ISO ISO ISO standard thermal deformation of stainless steel
ISO 20a ISO ISO ISO standard thermal deformation of stainless steel
ML20Al GBT China China structural steel and alloy steel
SWRCH20A CNS China China Taiwan Structural steel
STKM20A CNS China China Taiwan Structural steel
1Cr20Al3 GBT China High resistance alloys for electrical heating
X5CrNiMo17-12-3 ISO X2CrNi18-9
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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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