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AISI 422 Stainless Steel vs. S44725 Stainless Steel

Both AISI 422 stainless steel and S44725 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 33 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 AISI 422 stainless steel and the bottom bar is S44725 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 330
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 15 to 17
22
Fatigue Strength, MPa 410 to 500
210
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
81
Shear Strength, MPa 560 to 660
320
Tensile Strength: Ultimate (UTS), MPa 910 to 1080
500
Tensile Strength: Yield (Proof), MPa 670 to 870
310

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 380
500
Maximum Temperature: Mechanical, °C 650
1100
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1470
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 24
17
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.7
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 5.3
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.1
3.1
Embodied Energy, MJ/kg 44
44
Embodied Water, L/kg 100
170

Common Calculations

PREN (Pitting Resistance) 17
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
99
Resilience: Unit (Modulus of Resilience), kJ/m3 1140 to 1910
240
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 38
18
Strength to Weight: Bending, points 26 to 30
18
Thermal Diffusivity, mm2/s 6.4
4.6
Thermal Shock Resistance, points 33 to 39
16

Alloy Composition

Carbon (C), % 0.2 to 0.25
0 to 0.015
Chromium (Cr), % 11 to 12.5
25 to 28.5
Iron (Fe), % 81.9 to 85.8
67.6 to 73.5
Manganese (Mn), % 0.5 to 1.0
0 to 0.4
Molybdenum (Mo), % 0.9 to 1.3
1.5 to 2.5
Nickel (Ni), % 0.5 to 1.0
0 to 0.3
Niobium (Nb), % 0
0 to 0.26
Nitrogen (N), % 0
0 to 0.018
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.040
Sulfur (S), % 0 to 0.025
0 to 0.020
Titanium (Ti), % 0
0 to 0.26
Tungsten (W), % 0.9 to 1.3
0
Vanadium (V), % 0.2 to 0.3
0