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AISI 302 Stainless Steel vs. ASTM Grade HP Steel

Both AISI 302 stainless steel and ASTM grade HP steel are iron alloys. They have 64% 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 AISI 302 stainless steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 440
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 4.5 to 46
5.1
Fatigue Strength, MPa 210 to 520
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 580 to 1430
490
Tensile Strength: Yield (Proof), MPa 230 to 1100
260

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 710
1100
Melting Completion (Liquidus), °C 1420
1370
Melting Onset (Solidus), °C 1400
1330
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
12
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
34
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.0
5.8
Embodied Energy, MJ/kg 42
82
Embodied Water, L/kg 140
220

Common Calculations

PREN (Pitting Resistance) 19
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 59 to 260
21
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 3070
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 51
17
Strength to Weight: Bending, points 20 to 36
17
Thermal Diffusivity, mm2/s 4.4
3.2
Thermal Shock Resistance, points 12 to 31
11

Alloy Composition

Carbon (C), % 0 to 0.15
0.35 to 0.75
Chromium (Cr), % 17 to 19
24 to 28
Iron (Fe), % 67.9 to 75
29.2 to 42.7
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 8.0 to 10
33 to 37
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.040