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ISO A4

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ISO X1CrNiMoCu25-20-5 ISO X1CrNiMoCu25-20-7
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Description

ISO ISO ISO A4 ISO standard thermal deformation of stainless steel and ISO A4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: ISO A4
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy ISO A4 ISO ISO ISO standard thermal deformation of stainless steel
ISO X5CrNiMo17-12-2
ISO 20
ISO X5CrNiMo17-12-3
ISO 20a
ISO X6CrNiMoTi17-12-2
ISO 21
ISO X6CrNiMoNb17-12-2
ISO 23
ISO X1CrNiMoCuN20-18-7
ISO X1CrNiMoCu25-20-5

Chemical composition(mass fraction)(wt.%) of the ISO A4

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) N(%) Cu(%)
Max 0.020 Max 0.75 Max 2.00 Max 0.035 Max 0.015 19.0-20.0 23.5-26.0 4.00-5.00 Max 0.15 1.20-2.00

Mechanical Properties of steel grade ISO A4

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)
892 (≥) 272 (≥) 34 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade ISO A4

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
42 - -     0.41 -  
143 128 - 34.3 243   -  
454 - 44 31.2   422 411

Heat Treatment of steel grade ISO A4

Heat treated : 1353°C - 1967°C

Technological Curves of steel grade ISO A4

Cross Reference Table (Equivalent Grade) of ISO A4

Grade Standard Country Application
A4 ASTM USA Alloy tool steel
A40 JIS Japan Carbide for cutting tools
ISO A4 ISO ISO ISO standard thermal deformation of stainless steel
A4 STAS/SR Romania Structural steel
A40 STAS/SR Romania Structural steel
HA4N AS Australia Australia Structural steel
CA4 AS Australia Australia Structural steel
HA400 AS Australia Australia Structural steel
SMA400AW CNS China China Taiwan Structural steel
SMA400BW CNS China China Taiwan Structural steel
SMA400CW CNS China China Taiwan Structural steel
SMA400AP CNS China China Taiwan Structural steel
SMA400BP CNS China China Taiwan Structural steel
SMA400CP CNS China China Taiwan Structural steel
SMA490AW CNS China China Taiwan Structural steel
SMA490BW CNS China China Taiwan Structural steel
SMA490CW CNS China China Taiwan Structural steel
SMA490AP CNS China China Taiwan Structural steel
SMA490BP CNS China China Taiwan Structural steel
SMA490CP CNS China China Taiwan Structural steel
ISO X1CrNiMoCu25-20-5 ISO X1CrNiMoCu25-20-7
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