1.4550

1.4550 Stainless Steels to BS EN 10028-7

1.4550 - Specification & Application

  • BS EN 10028-7 - Flat products made of steels for pressure purposes - Part 7: Stainless steels
  • BS EN 10088-1 - Stainless steels - Part 1: List of stainless steels
  • BS EN 10088-2 - Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
  • BS EN 10088-3 - Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
  • BS EN 10088-5 - Stainless steels - Part 5: Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes
  • BS EN 10216-5 (2004) - Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes
  • BS EN 10217-7 - Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes
  • BS EN 10222-5 - Steel forgings for pressure purposes - Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels
  • BS EN 10250-4 - Open die steel forgings for general engineering purposes - Part 4: Stainless steels
  • BS EN 10253-3 - Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
  • BS EN 10253-4 - Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements
  • BS EN 10272 - Stainless steel bars for pressure purposes
  • BS EN 10296-2 (2005) - Welded circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel
  • BS EN 10297-2 (2005) - Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel

Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel

Chemical composition(wt.%) of 1.4550 grade: to BS EN 10028-7

Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.08
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.015
Cr 17.00 19.00
Ni 9.00 12.00
Mo - -
Nb+Ta - 1.00

1.4550 - Detail

Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel

Mechanical properties of grade 1.4550 BS 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)
764 (≥) 939 (≥) 34 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical properties of grade 1.4550 BS 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
275 (≥) 843 (≥) 23 42 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 242
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
748 865 811

Equivalent Grade

1 X6CrNiNb18-10 2 X6CrNiNb18-10(AFNOR) 3 ISO X6CrNiNb18-10 4 ISO X6CrNiNb18-10 Tube 5 EN X6CrNiNb18-10 6 EN X6CrNiNb18-10 7 EN X6CrNiNb18-10 8 EN X6CrNiNb18-10 9 EN X6CrNiNb18-10 10 EN X6CrNiNb18-10 11 X6CrNiNb18-10 12 1.4550 13 X6CrNiNb18-10 14 1.4550 15 X6CrNiNb18-10 16 X6CrNiNb18-10 17 X6CrNiNb18-10,1.4550,X5CrNiNb18-10,1.4546,AISI 347

Equivalent Products

Product shapes we supply:

We can customize the production of 1.4550 grade, contact us for the best solution.
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