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EN 1.3553 Steel vs. S81921 Stainless Steel

Both EN 1.3553 steel and S81921 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.3553 steel and the bottom bar is S81921 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 720
710

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 540
990
Melting Completion (Liquidus), °C 1620
1430
Melting Onset (Solidus), °C 1570
1390
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 24
15
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 24
14
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.5
2.9
Embodied Energy, MJ/kg 130
41
Embodied Water, L/kg 96
150

Common Calculations

PREN (Pitting Resistance) 31
28
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 24
25
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 6.4
4.0
Thermal Shock Resistance, points 21
20

Alloy Composition

Carbon (C), % 0.78 to 0.86
0 to 0.030
Chromium (Cr), % 3.9 to 4.3
19 to 22
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 80.7 to 83.7
66.7 to 75.9
Manganese (Mn), % 0 to 0.4
2.0 to 4.0
Molybdenum (Mo), % 4.7 to 5.2
1.0 to 2.0
Nickel (Ni), % 0
2.0 to 4.0
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 6.0 to 6.7
0
Vanadium (V), % 1.7 to 2.0
0