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S35140 Stainless Steel vs. ASTM Grade HP Steel

Both S35140 stainless steel and ASTM grade HP steel are iron alloys. 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 (4, in this case) are not shown.

For each property being compared, the top bar is S35140 stainless steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
5.1
Fatigue Strength, MPa 250
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 690
490
Tensile Strength: Yield (Proof), MPa 310
260

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Corrosion, °C 500
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1420
1370
Melting Onset (Solidus), °C 1370
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
12
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 31
34
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.5
5.8
Embodied Energy, MJ/kg 78
82
Embodied Water, L/kg 190
220

Common Calculations

PREN (Pitting Resistance) 28
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
21
Resilience: Unit (Modulus of Resilience), kJ/m3 250
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 3.7
3.2
Thermal Shock Resistance, points 16
11

Alloy Composition

Carbon (C), % 0 to 0.1
0.35 to 0.75
Chromium (Cr), % 20 to 22
24 to 28
Iron (Fe), % 44.1 to 52.7
29.2 to 42.7
Manganese (Mn), % 1.0 to 3.0
0 to 2.0
Molybdenum (Mo), % 1.0 to 2.0
0 to 0.5
Nickel (Ni), % 25 to 27
33 to 37
Niobium (Nb), % 0.25 to 0.75
0
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.040