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Description

USA MIL MIL-H-6875H (1989), 4330V Specialsteel Steel Welding Wire 0.88Cr - 1.8Ni - 1.6Co - 0.42Mo - 0.08V - (0.28 - 0.33C) (SAE 4330V) Vacuum Melted, Environment Controlled Packaging and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 4330V
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 4330V MIL USA Steel Welding Wire 0.88Cr - 1.8Ni - 1.6Co - 0.42Mo - 0.08V - (0.28 - 0.33C) (SAE 4330V) Vacuum Melted, Environment Controlled Packaging

Chemical composition(mass fraction)(wt.%) of the 4330V

C Si Mn P S Cr Mo Ni V
0.30 -0.34 0.15 -0.35 0.75 -1.00 ≤0.025 ≤0.010 0.75 -1.00 0.40 -0.50 1.65 -2.00 0.05 -0.10

Mechanical Properties of steel grade 4330V

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)
125 (≥) 476 (≥) 41 32 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade 4330V

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
32 - -     0.31 -  
235 237 - 41.3 423   -  
788 - 21 12.2   434 413

Heat Treatment of steel grade 4330V

Heat treated : 1956°C - 1619°C

Technological Curves of steel grade 4330V

Relevant standard of 4330V


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