X7CrNiMoBNb16-6

X7CrNiMoBNb16-6 Stainless Steels to NF EN 10028-7

X7CrNiMoBNb16-6 - Specification & Application

• NF EN 10028-7 - Flat products made of steels for pressure purposes - Part 7: Stainless steels
• NF EN 10088-1 - Stainless steels - Part 1: List of stainless steels
• NF EN 10216-5 (2004) - Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes
• NF EN 10222-5 - Steel forgings for pressure purposes - Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels
• NF EN 10269 - Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
• NF EN 10302 (2002) - Creep resisting steels, nickel and cobalt alloys

Creep resisting steels, nickel and cobalt alloys

Chemical composition(wt.%) of X7CrNiMoBNb16-6 grade: to NF EN 10028-7

X7CrNiMoBNb16-6 - Detail

Creep resisting steels, nickel and cobalt alloys

Mechanical properties of grade X7CrNiMoBNb16-6 NF EN 10028-7

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)
839 (≥)	358 (≥)	44	31	23	Solution and Aging, Annealing, Ausaging, Q+T,etc	424

Physical properties of grade X7CrNiMoBNb16-6 NF EN 10028-7

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
926 (≥)	557 (≥)	43	33	22	Solution and Aging, Annealing, Ausaging, Q+T,etc	311
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
628	729	589