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ASTM A387 Grade 21L Class 1 vs. EN 1.4872 Stainless Steel

Both ASTM A387 grade 21L class 1 and EN 1.4872 stainless steel are iron alloys. They have 62% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 21L class 1 and the bottom bar is EN 1.4872 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
270
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
28
Fatigue Strength, MPa 160
410
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
79
Shear Strength, MPa 310
620
Tensile Strength: Ultimate (UTS), MPa 500
950
Tensile Strength: Yield (Proof), MPa 230
560

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 480
1150
Melting Completion (Liquidus), °C 1470
1390
Melting Onset (Solidus), °C 1430
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 41
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
17
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 1.8
3.3
Embodied Energy, MJ/kg 23
47
Embodied Water, L/kg 62
180

Common Calculations

PREN (Pitting Resistance) 6.4
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
230
Resilience: Unit (Modulus of Resilience), kJ/m3 140
780
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 18
35
Strength to Weight: Bending, points 18
28
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 14
21

Alloy Composition

Carbon (C), % 0 to 0.1
0.2 to 0.3
Chromium (Cr), % 2.8 to 3.3
24 to 26
Iron (Fe), % 94.4 to 96.1
54.2 to 61.6
Manganese (Mn), % 0.3 to 0.6
8.0 to 10
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.015