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EN 1.4903 Stainless Steel vs. ASTM A387 Grade 22 Steel

Both EN 1.4903 stainless steel and ASTM A387 grade 22 steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 31 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 EN 1.4903 stainless steel and the bottom bar is ASTM A387 grade 22 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 21
21
Fatigue Strength, MPa 320 to 330
160 to 240
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
74
Shear Strength, MPa 420
300 to 380
Tensile Strength: Ultimate (UTS), MPa 670 to 680
480 to 600
Tensile Strength: Yield (Proof), MPa 500
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 650
460
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
3.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.6
1.7
Embodied Energy, MJ/kg 36
23
Embodied Water, L/kg 88
58

Common Calculations

PREN (Pitting Resistance) 13
5.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
85 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 650
140 to 320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
17 to 21
Strength to Weight: Bending, points 22
17 to 20
Thermal Diffusivity, mm2/s 7.0
11
Thermal Shock Resistance, points 23
14 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.080 to 0.12
0.050 to 0.15
Chromium (Cr), % 8.0 to 9.5
2.0 to 2.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 87.1 to 90.5
95.1 to 96.8
Manganese (Mn), % 0.3 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0.85 to 1.1
0.9 to 1.1
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025
Vanadium (V), % 0.18 to 0.25
0

Comparable Variants