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S21603 Stainless Steel vs. ASTM Grade HT Steel

Both S21603 stainless steel and ASTM grade HT steel are iron alloys. They have 70% of their average alloy composition in common. There are 28 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 S21603 stainless steel and the bottom bar is ASTM grade HT steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
4.6
Fatigue Strength, MPa 360
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 690
500
Tensile Strength: Yield (Proof), MPa 390
270

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 420
400
Maximum Temperature: Mechanical, °C 990
1010
Melting Completion (Liquidus), °C 1420
1390
Melting Onset (Solidus), °C 1380
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
15

Otherwise Unclassified Properties

Base Metal Price, % relative 17
31
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.6
5.4
Embodied Energy, MJ/kg 50
76
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 34
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
19
Resilience: Unit (Modulus of Resilience), kJ/m3 380
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
18
Strength to Weight: Bending, points 22
18
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0 to 0.030
0.35 to 0.75
Chromium (Cr), % 17.5 to 22
15 to 19
Iron (Fe), % 57.6 to 67.8
38.2 to 51.7
Manganese (Mn), % 7.5 to 9.0
0 to 2.0
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.5
Nickel (Ni), % 5.0 to 7.0
33 to 37
Nitrogen (N), % 0.25 to 0.5
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