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AISI 302B Stainless Steel vs. S44700 Stainless Steel

Both AISI 302B stainless steel and S44700 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 85% of their average alloy composition in common. There are 30 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 AISI 302B stainless steel and the bottom bar is S44700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 45
23
Fatigue Strength, MPa 210
300
Poisson's Ratio 0.28
0.27
Reduction in Area, % 57
45
Shear Modulus, GPa 76
82
Shear Strength, MPa 410
380
Tensile Strength: Ultimate (UTS), MPa 580
600
Tensile Strength: Yield (Proof), MPa 230
450

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Corrosion, °C 410
460
Maximum Temperature: Mechanical, °C 930
1100
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 490
480
Thermal Expansion, µm/m-K 16
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 140
180

Common Calculations

PREN (Pitting Resistance) 19
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
120
Resilience: Unit (Modulus of Resilience), kJ/m3 140
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
21
Strength to Weight: Bending, points 20
20
Thermal Shock Resistance, points 13
19

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.010
Chromium (Cr), % 17 to 19
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 65.7 to 73
64.9 to 68.5
Manganese (Mn), % 0 to 2.0
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 8.0 to 10
0 to 0.15
Nitrogen (N), % 0 to 0.1
0 to 0.020
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 2.0 to 3.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.020