MakeItFrom.com
Menu (ESC)

SAE-AISI A9 Steel vs. ASTM Grade HP Steel

Both SAE-AISI A9 steel and ASTM grade HP steel are iron alloys. They have 45% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A9 steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
490

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1410
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 35
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
34
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.7
5.8
Embodied Energy, MJ/kg 70
82
Embodied Water, L/kg 82
220

Common Calculations

PREN (Pitting Resistance) 10
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 73
17
Strength to Weight: Bending, points 24 to 46
17
Thermal Diffusivity, mm2/s 9.6
3.2
Thermal Shock Resistance, points 25 to 66
11

Alloy Composition

Carbon (C), % 0.45 to 0.55
0.35 to 0.75
Chromium (Cr), % 4.8 to 5.5
24 to 28
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 87 to 90.5
29.2 to 42.7
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 1.3 to 1.8
0 to 0.5
Nickel (Ni), % 1.3 to 1.8
33 to 37
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 1.0 to 1.2
0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0.8 to 1.4
0