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ASTM A387 Grade 22 Steel vs. AISI 403 Stainless Steel

Both ASTM A387 grade 22 steel and AISI 403 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 32 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 A387 grade 22 steel and the bottom bar is AISI 403 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
190 to 240
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
16 to 25
Fatigue Strength, MPa 160 to 240
200 to 340
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 300 to 380
340 to 480
Tensile Strength: Ultimate (UTS), MPa 480 to 600
530 to 780
Tensile Strength: Yield (Proof), MPa 230 to 350
280 to 570

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 460
740
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
28
Thermal Expansion, µm/m-K 13
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
6.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.9
Embodied Energy, MJ/kg 23
27
Embodied Water, L/kg 58
99

Common Calculations

PREN (Pitting Resistance) 5.6
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 85 to 110
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
210 to 840
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17 to 21
19 to 28
Strength to Weight: Bending, points 17 to 20
19 to 24
Thermal Diffusivity, mm2/s 11
7.6
Thermal Shock Resistance, points 14 to 17
20 to 29

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.15
Chromium (Cr), % 2.0 to 2.5
11.5 to 13
Iron (Fe), % 95.1 to 96.8
84.7 to 88.5
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
0 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.030

Comparable Variants