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ASTM B817 Type I vs. EN 1.3956 Stainless Steel

ASTM B817 type I belongs to the titanium alloys classification, while EN 1.3956 stainless steel belongs to the iron alloys. There are 25 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 ASTM B817 type I and the bottom bar is EN 1.3956 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 4.0 to 13
27
Fatigue Strength, MPa 360 to 520
240
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
79
Tensile Strength: Ultimate (UTS), MPa 770 to 960
650
Tensile Strength: Yield (Proof), MPa 700 to 860
330

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 340
1080
Melting Completion (Liquidus), °C 1600
1420
Melting Onset (Solidus), °C 1550
1380
Specific Heat Capacity, J/kg-K 560
480
Thermal Expansion, µm/m-K 9.6
13

Otherwise Unclassified Properties

Base Metal Price, % relative 36
22
Density, g/cm3 4.4
7.8
Embodied Carbon, kg CO2/kg material 38
4.8
Embodied Energy, MJ/kg 610
68
Embodied Water, L/kg 200
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
150
Resilience: Unit (Modulus of Resilience), kJ/m3 2310 to 3540
270
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 48 to 60
23
Strength to Weight: Bending, points 42 to 49
21
Thermal Shock Resistance, points 54 to 68
18

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.1
0 to 0.060
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
20.5 to 23.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
51.9 to 62.1
Manganese (Mn), % 0
4.0 to 6.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0 to 0.040
0.2 to 0.4
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 87 to 91
0
Vanadium (V), % 3.5 to 4.5
0.1 to 0.3
Residuals, % 0 to 0.4
0