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ASTM Grade HT Steel vs. S44735 Stainless Steel

Both ASTM grade HT steel and S44735 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HT steel and the bottom bar is S44735 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
220
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 4.6
21
Fatigue Strength, MPa 130
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
82
Tensile Strength: Ultimate (UTS), MPa 500
630
Tensile Strength: Yield (Proof), MPa 270
460

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 400
650
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 15
11

Otherwise Unclassified Properties

Base Metal Price, % relative 31
21
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.4
4.4
Embodied Energy, MJ/kg 76
61
Embodied Water, L/kg 190
180

Common Calculations

PREN (Pitting Resistance) 18
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
120
Resilience: Unit (Modulus of Resilience), kJ/m3 180
520
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 18
23
Strength to Weight: Bending, points 18
21
Thermal Shock Resistance, points 12
20

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.030
Chromium (Cr), % 15 to 19
28 to 30
Iron (Fe), % 38.2 to 51.7
60.7 to 68.4
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
3.6 to 4.2
Nickel (Ni), % 33 to 37
0 to 1.0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.0