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EN 1.4612 Stainless Steel vs. ASTM A387 Grade 21L Class 1

Both EN 1.4612 stainless steel and ASTM A387 grade 21L class 1 are iron alloys. They have 78% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4612 stainless steel and the bottom bar is ASTM A387 grade 21L class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
21
Fatigue Strength, MPa 860 to 950
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
74
Shear Strength, MPa 1010 to 1110
310
Tensile Strength: Ultimate (UTS), MPa 1690 to 1850
500
Tensile Strength: Yield (Proof), MPa 1570 to 1730
230

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 790
480
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 16
4.1
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.6
1.8
Embodied Energy, MJ/kg 50
23
Embodied Water, L/kg 140
62

Common Calculations

PREN (Pitting Resistance) 19
6.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 210
84
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 60 to 65
18
Strength to Weight: Bending, points 40 to 43
18
Thermal Shock Resistance, points 58 to 63
14

Alloy Composition

Aluminum (Al), % 1.4 to 1.8
0
Carbon (C), % 0 to 0.015
0 to 0.1
Chromium (Cr), % 11 to 12.5
2.8 to 3.3
Iron (Fe), % 71.5 to 75.5
94.4 to 96.1
Manganese (Mn), % 0 to 0.1
0.3 to 0.6
Molybdenum (Mo), % 1.8 to 2.3
0.9 to 1.1
Nickel (Ni), % 10.2 to 11.3
0
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.5
Sulfur (S), % 0 to 0.0050
0 to 0.025
Titanium (Ti), % 0.2 to 0.5
0