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AISI 314 Stainless Steel vs. ASTM A182 Grade F6b

Both AISI 314 stainless steel and ASTM A182 grade F6b are iron alloys. Both are furnished in the annealed condition. They have 67% of their average alloy composition in common.

For each property being compared, the top bar is AISI 314 stainless steel and the bottom bar is ASTM A182 grade F6b.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
260
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
18
Fatigue Strength, MPa 210
440
Poisson's Ratio 0.28
0.28
Reduction in Area, % 57
51
Shear Modulus, GPa 78
76
Shear Strength, MPa 410
530
Tensile Strength: Ultimate (UTS), MPa 590
850
Tensile Strength: Yield (Proof), MPa 230
710

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1100
750
Melting Completion (Liquidus), °C 1380
1450
Melting Onset (Solidus), °C 1340
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 25
8.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 4.3
2.2
Embodied Energy, MJ/kg 62
30
Embodied Water, L/kg 190
100

Common Calculations

PREN (Pitting Resistance) 25
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
140
Resilience: Unit (Modulus of Resilience), kJ/m3 130
1280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
30
Strength to Weight: Bending, points 20
26
Thermal Diffusivity, mm2/s 3.9
6.7
Thermal Shock Resistance, points 14
31

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.15
Chromium (Cr), % 23 to 26
11.5 to 13.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 46.7 to 56.5
81.2 to 87.1
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
0.4 to 0.6
Nickel (Ni), % 19 to 22
1.0 to 2.0
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 1.5 to 3.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020