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Class 04

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International ISO Class04 Mechanical properties of fasteners - Part 2: Nuts with specified proof load values - Coarse thread and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Class04 / Class 04
Category Grade Standard Region/Area Standard Content
Metals Class 04 ISO 898-2 International Mechanical properties of fasteners - Part 2: Nuts with specified proof load values - Coarse thread

Chemical composition(mass fraction)(wt.%) of the Class 04

Element Min Max Similar
S - 0.3400 -
Pb - 0.3500 -
P - 0.1100 -
Mn 0.2500 - -
C - 0.5800 -
S - 0.1500 -
P - 0.0600 -
Mn 0.2500 - -
C - 0.5800 -

Mechanical Properties of steel grade Class 04

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)
436 (≥) 317 (≥) 44 34 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade Class 04

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
43 - -     0.42 -  
754 764 - 41.3 323   -  
546 - 21 34.2   224 311

Heat Treatment of steel grade Class 04

Heat treated : 1368°C - 1943°C

Technological Curves of steel grade Class 04

Cross Reference Table (Equivalent Grade) of Class 04

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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