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EN 1.4446 Stainless Steel vs. ASTM A387 Grade 5 Steel

Both EN 1.4446 stainless steel and ASTM A387 grade 5 steel are iron alloys. They have 70% 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 1.4446 stainless steel and the bottom bar is ASTM A387 grade 5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
20 to 21
Fatigue Strength, MPa 160
160 to 240
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
74
Tensile Strength: Ultimate (UTS), MPa 490
500 to 600
Tensile Strength: Yield (Proof), MPa 240
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 980
510
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
40
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 22
4.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.5
1.7
Embodied Energy, MJ/kg 60
23
Embodied Water, L/kg 160
69

Common Calculations

PREN (Pitting Resistance) 34
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 140
140 to 320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
18 to 21
Strength to Weight: Bending, points 17
18 to 20
Thermal Diffusivity, mm2/s 3.6
11
Thermal Shock Resistance, points 11
14 to 17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 16.5 to 18.5
4.0 to 6.0
Iron (Fe), % 59.7 to 66.9
92.1 to 95.3
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 4.0 to 4.5
0.45 to 0.65
Nickel (Ni), % 12.5 to 14.5
0
Nitrogen (N), % 0.12 to 0.22
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025