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ASTM A387 Grade 21L Class 1 vs. EN 1.4849 Stainless Steel

Both ASTM A387 grade 21L class 1 and EN 1.4849 stainless steel are iron alloys. They have 42% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 1.4849 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
4.5
Fatigue Strength, MPa 160
120
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
75
Tensile Strength: Ultimate (UTS), MPa 500
480
Tensile Strength: Yield (Proof), MPa 230
250

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Maximum Temperature: Mechanical, °C 480
1020
Melting Completion (Liquidus), °C 1470
1390
Melting Onset (Solidus), °C 1430
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 41
12
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
42
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.8
7.1
Embodied Energy, MJ/kg 23
100
Embodied Water, L/kg 62
200

Common Calculations

PREN (Pitting Resistance) 6.4
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
18
Resilience: Unit (Modulus of Resilience), kJ/m3 140
160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
17
Strength to Weight: Bending, points 18
17
Thermal Diffusivity, mm2/s 11
3.2
Thermal Shock Resistance, points 14
11

Alloy Composition

Carbon (C), % 0 to 0.1
0.3 to 0.5
Chromium (Cr), % 2.8 to 3.3
18 to 21
Iron (Fe), % 94.4 to 96.1
32.6 to 43.5
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.5
Nickel (Ni), % 0
36 to 39
Niobium (Nb), % 0
1.2 to 1.8
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
1.0 to 2.5
Sulfur (S), % 0 to 0.025
0 to 0.030