1.5680

1.5680 Stainless Steels to NF EN 10028-4

1.5680 - Specification & Application

  • NF EN 10028-4 - Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties
  • NF EN 10216-4 - Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Non-alloy and alloy steel tubes with specified low temperature properties
  • NF EN 10222-3 - Steel forgings for pressure purposes - Part 3: Nickel steels with specified low temperature properties
  • NF EN 10269 - Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Chemical composition(wt.%) of 1.5680 grade: to NF EN 10028-4

Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.15
Si - 0.35
Mn 0.30 0.80
P - 0.020
S - 0.010
Cr - -
Ni 4.75 5.25
Mo - -
V - 0.05

1.5680 - Detail

Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Mechanical properties of grade 1.5680 NF EN 10028-4

Proof strength
Rp0.2 (MPa)		 Tensile strength
Rm (MPa)		 Impact energy
KV (J)		 Elongation at fracture
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
686 (≥) 145 (≥) 41 13 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical properties of grade 1.5680 NF EN 10028-4

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm		 Modulus of elasticity
kN/mm2		 Expansion rate
114 (≥) 417 (≥) 34 24 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 331
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
999 132 875

Equivalent Grade

1 X12Ni5 2 X12Ni5 3 X12Ni5 4 1.5680

Equivalent Products

Product shapes we supply:

We can customize the production of 1.5680 grade, contact us for the best solution.
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