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AISI 321H Stainless Steel vs. ASTM Grade HL Steel

Both AISI 321H stainless steel and ASTM grade HL steel are iron alloys. They have 77% 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 AISI 321H stainless steel and the bottom bar is ASTM grade HL steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
11
Fatigue Strength, MPa 200
150
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 580
500
Tensile Strength: Yield (Proof), MPa 230
270

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Corrosion, °C 480
460
Maximum Temperature: Mechanical, °C 940
1100
Melting Completion (Liquidus), °C 1430
1390
Melting Onset (Solidus), °C 1380
1340
Specific Heat Capacity, J/kg-K 480
490
Thermal Expansion, µm/m-K 17
17

Otherwise Unclassified Properties

Base Metal Price, % relative 16
27
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
4.5
Embodied Energy, MJ/kg 46
65
Embodied Water, L/kg 140
210

Common Calculations

PREN (Pitting Resistance) 18
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
48
Resilience: Unit (Modulus of Resilience), kJ/m3 140
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 20
18
Thermal Shock Resistance, points 12
11

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.2 to 0.6
Chromium (Cr), % 17 to 19
28 to 32
Iron (Fe), % 65.4 to 74
40.8 to 53.8
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 9.0 to 12
18 to 22
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Titanium (Ti), % 0 to 0.7
0