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AISI 439 Stainless Steel vs. ASTM A182 Grade F6b

Both AISI 439 stainless steel and ASTM A182 grade F6b are iron alloys. Both are furnished in the annealed condition. They have a moderately high 94% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is ASTM A182 grade F6b.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
260
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
18
Fatigue Strength, MPa 170
440
Poisson's Ratio 0.28
0.28
Reduction in Area, % 51
51
Shear Modulus, GPa 77
76
Shear Strength, MPa 310
530
Tensile Strength: Ultimate (UTS), MPa 490
850
Tensile Strength: Yield (Proof), MPa 250
710

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 530
390
Maximum Temperature: Mechanical, °C 890
750
Melting Completion (Liquidus), °C 1510
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
25
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
8.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.3
2.2
Embodied Energy, MJ/kg 34
30
Embodied Water, L/kg 120
100

Common Calculations

PREN (Pitting Resistance) 18
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
140
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
30
Strength to Weight: Bending, points 18
26
Thermal Diffusivity, mm2/s 6.7
6.7
Thermal Shock Resistance, points 16
31

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 17 to 19
11.5 to 13.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 77.1 to 82.8
81.2 to 87.1
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0.4 to 0.6
Nickel (Ni), % 0 to 0.5
1.0 to 2.0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0.2 to 1.1
0