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ASTM A387 Grade 21L Class 1 vs. EN 1.4305 Stainless Steel

Both ASTM A387 grade 21L class 1 and EN 1.4305 stainless steel are iron alloys. They have 74% 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 1.4305 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200 to 270
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
14 to 40
Fatigue Strength, MPa 160
190 to 330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 310
420 to 550
Tensile Strength: Ultimate (UTS), MPa 500
610 to 900
Tensile Strength: Yield (Proof), MPa 230
220 to 570

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 480
930
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1430
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 41
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
15
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
3.0
Embodied Energy, MJ/kg 23
42
Embodied Water, L/kg 62
140

Common Calculations

PREN (Pitting Resistance) 6.4
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 140
120 to 830
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18
22 to 32
Strength to Weight: Bending, points 18
20 to 27
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 14
14 to 20

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.1
Chromium (Cr), % 2.8 to 3.3
17 to 19
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 94.4 to 96.1
66.4 to 74.9
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
8.0 to 10
Nitrogen (N), % 0
0 to 0.1
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
0.15 to 0.35