MakeItFrom.com
Menu (ESC)

S21800 Stainless Steel vs. SAE-AISI P4 Steel

Both S21800 stainless steel and SAE-AISI P4 steel are iron alloys. They have 68% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is SAE-AISI P4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
74
Tensile Strength: Ultimate (UTS), MPa 740
390 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 340
260
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 15
4.4
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.8
Embodied Energy, MJ/kg 45
23
Embodied Water, L/kg 150
68

Common Calculations

PREN (Pitting Resistance) 19
7.0
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 27
14 to 70
Strength to Weight: Bending, points 24
15 to 45
Thermal Shock Resistance, points 17
13 to 64

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.12
Chromium (Cr), % 16 to 18
4.0 to 5.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 59.1 to 65.4
92.3 to 95.3
Manganese (Mn), % 7.0 to 9.0
0.2 to 0.6
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 8.0 to 9.0
0
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 3.5 to 4.5
0.1 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030