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S81921 Stainless Steel vs. EN 1.4607 Stainless Steel

Both S81921 stainless steel and EN 1.4607 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 92% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S81921 stainless steel and the bottom bar is EN 1.4607 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
21
Fatigue Strength, MPa 370
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 460
330
Tensile Strength: Ultimate (UTS), MPa 710
530
Tensile Strength: Yield (Proof), MPa 500
270

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 430
580
Maximum Temperature: Mechanical, °C 990
930
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
18
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 14
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.8
Embodied Energy, MJ/kg 41
40
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 28
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
91
Resilience: Unit (Modulus of Resilience), kJ/m3 630
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
19
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 4.0
4.9
Thermal Shock Resistance, points 20
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 19 to 22
18.5 to 20.5
Iron (Fe), % 66.7 to 75.9
75.6 to 81.4
Manganese (Mn), % 2.0 to 4.0
0 to 1.0
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 2.0 to 4.0
0
Niobium (Nb), % 0
0 to 1.0
Nitrogen (N), % 0.14 to 0.2
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.8