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AISI 321 Stainless Steel vs. EN 1.7767 Steel

Both AISI 321 stainless steel and EN 1.7767 steel are iron alloys. They have 73% of their average alloy composition in common. There are 32 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 321 stainless steel and the bottom bar is EN 1.7767 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 210
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34 to 50
20
Fatigue Strength, MPa 220 to 270
320 to 340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 420 to 460
420 to 430
Tensile Strength: Ultimate (UTS), MPa 590 to 690
670 to 690
Tensile Strength: Yield (Proof), MPa 220 to 350
460 to 500

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 870
480
Melting Completion (Liquidus), °C 1430
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
40
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
4.5
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
2.4
Embodied Energy, MJ/kg 45
33
Embodied Water, L/kg 140
64

Common Calculations

PREN (Pitting Resistance) 19
6.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 230
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 310
570 to 650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 25
24
Strength to Weight: Bending, points 20 to 22
22
Thermal Diffusivity, mm2/s 4.1
11
Thermal Shock Resistance, points 13 to 15
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.080
0.1 to 0.15
Chromium (Cr), % 17 to 19
2.8 to 3.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 65.3 to 74
93.8 to 95.8
Manganese (Mn), % 0 to 2.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 9.0 to 12
0 to 0.25
Niobium (Nb), % 0
0 to 0.070
Nitrogen (N), % 0 to 0.1
0 to 0.012
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 0.75
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.0050
Titanium (Ti), % 0 to 0.7
0 to 0.030
Vanadium (V), % 0
0.2 to 0.3