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S44700 Stainless Steel vs. AISI 303 Stainless Steel

Both S44700 stainless steel and AISI 303 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S44700 stainless steel and the bottom bar is AISI 303 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
170 to 210
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
40 to 51
Fatigue Strength, MPa 300
230 to 360
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 82
77
Shear Strength, MPa 380
430 to 470
Tensile Strength: Ultimate (UTS), MPa 600
600 to 690
Tensile Strength: Yield (Proof), MPa 450
230 to 420

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 460
410
Maximum Temperature: Mechanical, °C 1100
930
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 11
17

Otherwise Unclassified Properties

Base Metal Price, % relative 18
15
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
3.0
Embodied Energy, MJ/kg 49
42
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 42
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
240
Resilience: Unit (Modulus of Resilience), kJ/m3 480
140 to 440
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
21 to 25
Strength to Weight: Bending, points 20
20 to 22
Thermal Shock Resistance, points 19
13 to 15

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.15
Chromium (Cr), % 28 to 30
17 to 19
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 64.9 to 68.5
67.3 to 74.9
Manganese (Mn), % 0 to 0.3
0 to 2.0
Molybdenum (Mo), % 3.5 to 4.2
0
Nickel (Ni), % 0 to 0.15
8.0 to 10
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0 to 0.2
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0 to 0.020
0.15 to 0.35