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ASTM Grade HP Steel vs. AISI 201 Stainless Steel

Both ASTM grade HP steel and AISI 201 stainless steel are iron alloys. They have 59% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is AISI 201 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200 to 440
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.1
4.6 to 51
Fatigue Strength, MPa 130
280 to 600
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 490
650 to 1450
Tensile Strength: Yield (Proof), MPa 260
300 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
880
Melting Completion (Liquidus), °C 1370
1410
Melting Onset (Solidus), °C 1330
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 34
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.8
2.6
Embodied Energy, MJ/kg 82
38
Embodied Water, L/kg 220
140

Common Calculations

PREN (Pitting Resistance) 27
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
61 to 340
Resilience: Unit (Modulus of Resilience), kJ/m3 170
230 to 2970
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
23 to 52
Strength to Weight: Bending, points 17
22 to 37
Thermal Diffusivity, mm2/s 3.2
4.0
Thermal Shock Resistance, points 11
14 to 32

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.15
Chromium (Cr), % 24 to 28
16 to 18
Iron (Fe), % 29.2 to 42.7
67.5 to 75
Manganese (Mn), % 0 to 2.0
5.5 to 7.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
3.5 to 5.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 2.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030