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725 (X 4 CrNi 18 9)

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Finland SFS 725(X4CrNi189) Austenitic stainless steel 725. X 4 CrNi 18 9 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 725(X4CrNi189) / 725 (X 4 CrNi 18 9)
Category Grade Standard Region/Area Standard Content
Metals 725 (X 4 CrNi 18 9) SFS 725 Finland Austenitic stainless steel 725. X 4 CrNi 18 9

Chemical composition(mass fraction)(wt.%) of the 725 (X 4 CrNi 18 9)

Element Min Max Similar
Si - 1.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 8.0000 11.0000 -
Mn - 2.0000 -
Cr 17.0000 19.0000 -
C - 0.0500 -

Mechanical Properties of steel grade 725 (X 4 CrNi 18 9)

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)
279 (≥) 124 (≥) 34 41 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade 725 (X 4 CrNi 18 9)

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
31 - -     0.44 -  
374 311 - 43.3 243   -  
554 - 44 41.2   113 143

Heat Treatment of steel grade 725 (X 4 CrNi 18 9)

Heat treated : 1437°C - 1167°C

Technological Curves of steel grade 725 (X 4 CrNi 18 9)

Cross Reference Table (Equivalent Grade) of 725 (X 4 CrNi 18 9)

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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