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AISI 440A Stainless Steel vs. ASTM Grade HL Steel

Both AISI 440A stainless steel and ASTM grade HL steel are iron alloys. They have 66% of their average alloy composition in common. There are 26 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 440A stainless steel and the bottom bar is ASTM grade HL steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.0 to 20
11
Fatigue Strength, MPa 270 to 790
150
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
500
Tensile Strength: Yield (Proof), MPa 420 to 1650
270

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Corrosion, °C 400
460
Maximum Temperature: Mechanical, °C 760
1100
Melting Completion (Liquidus), °C 1480
1390
Melting Onset (Solidus), °C 1370
1340
Specific Heat Capacity, J/kg-K 480
490
Thermal Expansion, µm/m-K 10
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
27
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
4.5
Embodied Energy, MJ/kg 31
65
Embodied Water, L/kg 120
210

Common Calculations

PREN (Pitting Resistance) 18
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
48
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 65
18
Strength to Weight: Bending, points 23 to 43
18
Thermal Shock Resistance, points 26 to 65
11

Alloy Composition

Carbon (C), % 0.6 to 0.75
0.2 to 0.6
Chromium (Cr), % 16 to 18
28 to 32
Iron (Fe), % 78.4 to 83.4
40.8 to 53.8
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.75
0 to 0.5
Nickel (Ni), % 0
18 to 22
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.040