EN 1.6958 (26NiCrMo14-6) Nickel-Chromium Steel
Alloy Steels
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength1140MPa
Yield Strength1070MPa
Brinell Hardness340HB
Maximum Service Temperature450°C
Chemical Composition
C
0.25 to 0.3%
CR
1.2 to 1.7%
NI
3.3 to 3.8%
MO
0.35 to 0.55%
MN
0.2 to 0.5%
SI
0.15 to 0.3%
P
0 to 0.020%
S
0 to 0.015%
V
0 to 0.12%
AL
0.0050 to 0.050%
FE
92.6 to 94.5%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
16 %
Fatigue Strength
700 MPa
Impact Strength: V-Notched Charpy
63 J
Poisson's Ratio
0.29
Reduction in Area
56 %
Shear Modulus
73 GPa
Shear Strength
700 MPa
Tensile Strength: Ultimate (UTS)
1140 MPa
Tensile Strength: Yield (Proof)
1070 MPa
Hardness
Brinell Hardness
340
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
450 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
47 W/m-K
Thermal Diffusivity
13 mm 2 /s
Thermal Expansion
11 µm/m-K
Thermal Shock Resistance
39 points
Electrical
Electrical Conductivity: Equal Volume
7.9 % IACS
Electrical Conductivity: Equal Weight (Specific)
9.1 % IACS
Calculated
PREN (Pitting Resistance)
2.9
Resilience: Ultimate (Unit Rupture Work)
180 MJ/m 3
Resilience: Unit (Modulus of Resilience)
3050 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
40 points
Strength to Weight: Bending
31 points
Environmental
Base Metal Price
5.0 % relative
Embodied Carbon
2.0 kg CO 2 /kg material
Embodied Energy
27 MJ/kg
Embodied Energy
27 MJ/kg 12 x 10 3 BTU/lb
Embodied Water
60 L/kg
Embodied Water
60 L/kg 7.2 gal/lb
Registered Designations & Aliases
1.695826NiCrMo14-6EN 1.6958 (26NiCrMo14-6) Nickel-Chromium Steel
Standards
EN 10269 EN 10269: Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
EN 10269 EN 10269: Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005