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CN-7M

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Brazil NBR CN-7M Casting stainless steel - Austenitic for service at high temperatures and in corrosive media - Specification and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: CN-7M / CN-7M
Category Grade Standard Region/Area Standard Content
Metals CN-7M ABNT NBR 8636 Brazil Casting stainless steel - Austenitic for service at high temperatures and in corrosive media - Specification

Chemical composition(mass fraction)(wt.%) of the CN-7M

Element Min Max Similar
C - 0.0700 -
Mn - 1.5000 -
P - 0.0400 -
S - 0.0400 -
Si - 1.5000 -
Ni 27.5000 30.5000 -
Cr 19.0000 22.0000 -
Mo 2.0000 3.0000 -
Cu 3.0000 4.0000 -
Fe - - -
C - 0.0700 -
Mn - 1.5000 -
P - 0.0400 -
S - 0.0400 -
Si - 1.5000 -
Ni 27.5000 30.5000 -
Cr 19.0000 22.0000 -
Mo 2.0000 3.0000 -

Mechanical Properties of steel grade CN-7M

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)
239 (≥) 391 (≥) 33 32 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade CN-7M

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
23 - -     0.12 -  
179 411 - 11.3 441   -  
248 - 14 42.2   314 213

Heat Treatment of steel grade CN-7M

Heat treated : 1659°C - 1737°C

Technological Curves of steel grade CN-7M

Cross Reference Table (Equivalent Grade) of CN-7M

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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