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ASTM Grade HF Steel vs. S20910 Stainless Steel

Both ASTM grade HF steel and S20910 stainless steel are iron alloys. They have 89% 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 ASTM grade HF steel and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
230 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
14 to 39
Fatigue Strength, MPa 200
310 to 460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 550
780 to 940
Tensile Strength: Yield (Proof), MPa 270
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 1000
1080
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
13
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 17
22
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.2
4.8
Embodied Energy, MJ/kg 46
68
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 21
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 180
460 to 1640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
28 to 33
Strength to Weight: Bending, points 19
24 to 27
Thermal Diffusivity, mm2/s 4.2
3.6
Thermal Shock Resistance, points 12
17 to 21

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.060
Chromium (Cr), % 18 to 23
20.5 to 23.5
Iron (Fe), % 60 to 73.8
52.1 to 62.1
Manganese (Mn), % 0 to 2.0
4.0 to 6.0
Molybdenum (Mo), % 0 to 0.5
1.5 to 3.0
Nickel (Ni), % 8.0 to 12
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3