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S21904 Stainless Steel vs. S44700 Stainless Steel

Both S21904 stainless steel and S44700 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is S44700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
200
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 17 to 51
23
Fatigue Strength, MPa 380 to 550
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
82
Shear Strength, MPa 510 to 620
380
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
600
Tensile Strength: Yield (Proof), MPa 390 to 910
450

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 430
460
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
18
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.0
3.6
Embodied Energy, MJ/kg 43
49
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 25
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
120
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 36
21
Strength to Weight: Bending, points 23 to 29
20
Thermal Shock Resistance, points 15 to 21
19

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.010
Chromium (Cr), % 19 to 21.5
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 59.5 to 67.4
64.9 to 68.5
Manganese (Mn), % 8.0 to 10
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 5.5 to 7.5
0 to 0.15
Nitrogen (N), % 0.15 to 0.4
0 to 0.020
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.020