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ASTM Grade HP Steel vs. AISI 403 Stainless Steel

Both ASTM grade HP steel and AISI 403 stainless steel are iron alloys. They have 49% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 403 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
190 to 240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 5.1
16 to 25
Fatigue Strength, MPa 130
200 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 490
530 to 780
Tensile Strength: Yield (Proof), MPa 260
280 to 570

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1100
740
Melting Completion (Liquidus), °C 1370
1450
Melting Onset (Solidus), °C 1330
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
28
Thermal Expansion, µm/m-K 16
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 34
6.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.8
1.9
Embodied Energy, MJ/kg 82
27
Embodied Water, L/kg 220
99

Common Calculations

PREN (Pitting Resistance) 27
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 170
210 to 840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
19 to 28
Strength to Weight: Bending, points 17
19 to 24
Thermal Diffusivity, mm2/s 3.2
7.6
Thermal Shock Resistance, points 11
20 to 29

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.15
Chromium (Cr), % 24 to 28
11.5 to 13
Iron (Fe), % 29.2 to 42.7
84.7 to 88.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
0 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.5
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030