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S81921 Stainless Steel vs. EN 1.7386 Steel

Both S81921 stainless steel and EN 1.7386 steel are iron alloys. They have 82% of their average alloy composition in common. There are 32 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 S81921 stainless steel and the bottom bar is EN 1.7386 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
170 to 200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
18 to 21
Fatigue Strength, MPa 370
170 to 290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
75
Shear Strength, MPa 460
340 to 410
Tensile Strength: Ultimate (UTS), MPa 710
550 to 670
Tensile Strength: Yield (Proof), MPa 500
240 to 440

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Mechanical, °C 990
600
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
10

Otherwise Unclassified Properties

Base Metal Price, % relative 14
6.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.9
2.0
Embodied Energy, MJ/kg 41
28
Embodied Water, L/kg 150
88

Common Calculations

PREN (Pitting Resistance) 28
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
92 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 630
150 to 490
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
20 to 24
Strength to Weight: Bending, points 23
19 to 22
Thermal Diffusivity, mm2/s 4.0
6.9
Thermal Shock Resistance, points 20
15 to 18

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.030
0.080 to 0.15
Chromium (Cr), % 19 to 22
8.0 to 10
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 66.7 to 75.9
86.8 to 90.5
Manganese (Mn), % 2.0 to 4.0
0.3 to 0.6
Molybdenum (Mo), % 1.0 to 2.0
0.9 to 1.1
Nickel (Ni), % 2.0 to 4.0
0
Nitrogen (N), % 0.14 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0.25 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010