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EN 1.4962 Stainless Steel vs. ASTM A387 Grade 91 Class 2

Both EN 1.4962 stainless steel and ASTM A387 grade 91 class 2 are iron alloys. They have 75% 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 EN 1.4962 stainless steel and the bottom bar is ASTM A387 grade 91 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 210
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 22 to 34
20
Fatigue Strength, MPa 210 to 330
330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 420 to 440
420
Tensile Strength: Ultimate (UTS), MPa 630 to 690
670
Tensile Strength: Yield (Proof), MPa 260 to 490
470

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Mechanical, °C 910
600
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1440
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
26
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
10

Otherwise Unclassified Properties

Base Metal Price, % relative 23
7.0
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 4.1
2.6
Embodied Energy, MJ/kg 59
37
Embodied Water, L/kg 150
88

Common Calculations

PREN (Pitting Resistance) 21
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 170
120
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 610
580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 24
24
Strength to Weight: Bending, points 20 to 21
22
Thermal Diffusivity, mm2/s 3.7
6.9
Thermal Shock Resistance, points 14 to 16
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0.0015 to 0.0060
0
Carbon (C), % 0.070 to 0.15
0.080 to 0.12
Chromium (Cr), % 15.5 to 17.5
8.0 to 9.5
Iron (Fe), % 62.1 to 69
87.3 to 90.3
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 12.5 to 14.5
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 0.5
0.2 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0.4 to 0.7
0 to 0.010
Tungsten (W), % 2.5 to 3.0
0
Vanadium (V), % 0
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010