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AISI 439 Stainless Steel vs. S44735 Stainless Steel

Both AISI 439 stainless steel and S44735 stainless steel are iron alloys. Both are furnished in the annealed condition. 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 (8, in this case) are not shown.

For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is S44735 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
220
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 23
21
Fatigue Strength, MPa 170
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
82
Shear Strength, MPa 310
390
Tensile Strength: Ultimate (UTS), MPa 490
630
Tensile Strength: Yield (Proof), MPa 250
460

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 530
650
Maximum Temperature: Mechanical, °C 890
1100
Melting Completion (Liquidus), °C 1510
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 11
11

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
21
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.3
4.4
Embodied Energy, MJ/kg 34
61
Embodied Water, L/kg 120
180

Common Calculations

PREN (Pitting Resistance) 18
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
120
Resilience: Unit (Modulus of Resilience), kJ/m3 160
520
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 18
23
Strength to Weight: Bending, points 18
21
Thermal Shock Resistance, points 16
20

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17 to 19
28 to 30
Iron (Fe), % 77.1 to 82.8
60.7 to 68.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
3.6 to 4.2
Nickel (Ni), % 0 to 0.5
0 to 1.0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0 to 0.030
0 to 0.045
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 0.030
Titanium (Ti), % 0.2 to 1.1
0.2 to 1.0