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HP 9-4-20

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A 646 Grade HP 9-4-20 HP 9-4-20
#HP #9-4-20

Description

USA ASTM SAE AMS 6523G (2011), HP 9-4-20 Specialsteel Steel, Sheet, Strip, and Plate 0.75Cr - 9.0Ni - 4.5Co - 1.0Mo - 0.09V (0.17 - 0.23C) Vacuum Consumable Electrode Melted, Annealed and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: HP 9-4-20
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel HP 9-4-20 Precipitation-Hardening ASTM USA Steel, Sheet, Strip, and Plate 0.75Cr - 9.0Ni - 4.5Co - 1.0Mo - 0.09V (0.17 - 0.23C) Vacuum Consumable Electrode Melted, Annealed

Chemical composition(mass fraction)(wt.%) of the HP 9-4-20

C Si Mn Ni Cr Al Cu Ti Fe Mo Co V P S W
0.17 -0.23 ≤0.10 ≤0.20 ≤0.65 ≤0.40 4.25 -4.75 ≤ ≥ ≤ ≥ ≤ ≥ ≤0.85 8.50 -9.50 0.06 -0.12 ≤0.01 ≤0.01 0.90 -1.10

Mechanical Properties of steel grade HP 9-4-20

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)
139 (≥) 531 (≥) 31 43 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade HP 9-4-20

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
34 - -     0.44 -  
642 948 - 33.3 244   -  
226 - 34 11.2   314 144

Heat Treatment of steel grade HP 9-4-20

Heat treated : 1438°C - 1243°C

Technological Curves of steel grade HP 9-4-20

Cross Reference Table (Equivalent Grade) of HP 9-4-20

Grade Standard Country Application
HP-10
439 HP-10
AL 441HP
HP 9-4-20
HP 9-4-25
HP 9-4-30
A709 Gr.HPS50W
A709 Gr.HPS70W
A709 Gr.HPS100W
ASTM HP
ASTM HP
ASTM HP
ASTM HP

Relevant standard of HP 9-4-20

SAE AMS 6523G (2011) Steel, Sheet, Strip, and Plate 0.75Cr - 9.0Ni - 4.5Co - 1.0Mo - 0.09V (0.17 - 0.23C) Vacuum Consumable Electrode Melted, Annealed SAE-AMS-6523G-(2011).pdf
A 646 Grade HP 9-4-20 HP 9-4-20
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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