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AISI 441 Stainless Steel vs. S44700 Stainless Steel

Both AISI 441 stainless steel and S44700 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 86% 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 AISI 441 stainless steel and the bottom bar is S44700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
200
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 23
23
Fatigue Strength, MPa 180
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
82
Shear Strength, MPa 300
380
Tensile Strength: Ultimate (UTS), MPa 470
600
Tensile Strength: Yield (Proof), MPa 270
450

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 550
460
Maximum Temperature: Mechanical, °C 910
1100
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
11

Otherwise Unclassified Properties

Base Metal Price, % relative 13
18
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.6
Embodied Energy, MJ/kg 41
49
Embodied Water, L/kg 130
180

Common Calculations

PREN (Pitting Resistance) 19
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
120
Resilience: Unit (Modulus of Resilience), kJ/m3 190
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 17
20
Thermal Shock Resistance, points 16
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 17.5 to 19.5
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 76 to 82.2
64.9 to 68.5
Manganese (Mn), % 0 to 1.0
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 0 to 1.0
0 to 0.15
Niobium (Nb), % 0.3 to 0.9
0
Nitrogen (N), % 0 to 0.030
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0.1 to 0.5
0