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S30452 Stainless Steel vs. S44537 Stainless Steel

Both S30452 stainless steel and S44537 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 90% of their average alloy composition in common.

For each property being compared, the top bar is S30452 stainless steel and the bottom bar is S44537 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
21
Fatigue Strength, MPa 250
230
Poisson's Ratio 0.28
0.27
Rockwell B Hardness 88
80
Shear Modulus, GPa 77
79
Shear Strength, MPa 440
320
Tensile Strength: Ultimate (UTS), MPa 660
510
Tensile Strength: Yield (Proof), MPa 310
360

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
530
Maximum Temperature: Mechanical, °C 960
1000
Melting Completion (Liquidus), °C 1420
1480
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
21
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 15
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.0
3.4
Embodied Energy, MJ/kg 43
50
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 23
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
95
Resilience: Unit (Modulus of Resilience), kJ/m3 250
320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 4.2
5.6
Thermal Shock Resistance, points 15
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 18 to 20
20 to 24
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 66.3 to 73.8
69 to 78.6
Lanthanum (La), % 0
0.040 to 0.2
Manganese (Mn), % 0 to 2.0
0 to 0.8
Nickel (Ni), % 8.0 to 10.5
0 to 0.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0.16 to 0.3
0 to 0.040
Phosphorus (P), % 0 to 0.045
0 to 0.050
Silicon (Si), % 0 to 0.75
0.1 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.0060
Titanium (Ti), % 0
0.020 to 0.2
Tungsten (W), % 0
1.0 to 3.0