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ASTM Grade HP Steel vs. S32906 Stainless Steel

Both ASTM grade HP steel and S32906 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is S32906 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
270
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 5.1
28
Fatigue Strength, MPa 130
460
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
81
Tensile Strength: Ultimate (UTS), MPa 490
850
Tensile Strength: Yield (Proof), MPa 260
620

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Corrosion, °C 440
460
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1370
1430
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
13
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 34
20
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.8
3.7
Embodied Energy, MJ/kg 82
52
Embodied Water, L/kg 220
190

Common Calculations

PREN (Pitting Resistance) 27
41
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
220
Resilience: Unit (Modulus of Resilience), kJ/m3 170
950
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
30
Strength to Weight: Bending, points 17
26
Thermal Diffusivity, mm2/s 3.2
3.6
Thermal Shock Resistance, points 11
23

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.030
Chromium (Cr), % 24 to 28
28 to 30
Copper (Cu), % 0
0 to 0.8
Iron (Fe), % 29.2 to 42.7
56.6 to 63.6
Manganese (Mn), % 0 to 2.0
0.8 to 1.5
Molybdenum (Mo), % 0 to 0.5
1.5 to 2.6
Nickel (Ni), % 33 to 37
5.8 to 7.5
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.5
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030