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EN 1.7386 Steel vs. AISI 309 Stainless Steel

Both EN 1.7386 steel and AISI 309 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7386 steel and the bottom bar is AISI 309 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 200
180 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 18 to 21
34 to 47
Fatigue Strength, MPa 170 to 290
250 to 280
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 75
78
Shear Strength, MPa 340 to 410
420 to 470
Tensile Strength: Ultimate (UTS), MPa 550 to 670
600 to 710
Tensile Strength: Yield (Proof), MPa 240 to 440
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Mechanical, °C 600
980
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 26
16
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
3.6
Embodied Energy, MJ/kg 28
51
Embodied Water, L/kg 88
170

Common Calculations

PREN (Pitting Resistance) 12
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92 to 110
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 490
170 to 310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20 to 24
21 to 25
Strength to Weight: Bending, points 19 to 22
20 to 23
Thermal Diffusivity, mm2/s 6.9
4.3
Thermal Shock Resistance, points 15 to 18
14 to 16

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.080 to 0.15
0 to 0.2
Chromium (Cr), % 8.0 to 10
22 to 24
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 86.8 to 90.5
58 to 66
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
12 to 15
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0.25 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030