ALLOY 718 / UNS N07718

• Applications

  Used in pumps, tooling, gas turbines, rocket motors and nuclear reactors.

• Heat Treatment & weldability

  Heat Treatment

  Solution annealed at 1021 – 1052°C. Age hardening at 774 – 802°C.

  Weldability

  Very good.

• Chemical Composition (Specific for Bars)

  Weight  %	C	Mn	P	S	Si	Cr	Ni	Mo	Cu	Nb+Ta	Co	Fe	Al	Ti	B	Pb	Se	Bi
  Min.						17,0	50,0	2,80		4,87		bal.	0,40	0,80
  Max.	0,045	0,35	0,010	0,010	0,35	21,0	55,0	3,30	0,23	5,20	1,00	bal.	0,60	1,15	60 ppm	10 ppm	5 ppm	0,5 ppm

• Reference Standards

  General:

  • PED 2014/68/EU Annex I section 4.3
  • NACE MR0175/ ISO 15156-3 and NACE MR0103/ ISO 17945

  Bars:

  • API 6ACRA

• Mechanical Properties (Specific for Bars – 120K)

  Dimension (mm)	Yield strength Rp0.2, MPa	Tensile strength Rm, MPa	Elongation [%]	Hardness [HRC]	Impact Charpy-V, -60ºC [J]
  < 76	827 – 1000	≥ 1034	≥ 20	32 – 40	≥ 68
  76 – 254	827 – 1000	≥ 1034	≥ 20	32 – 40	≥ 47
  > 254	827 – 1000	≥ 1034	≥ 20	32 – 40	≥ 41

Stocked products and dimensions

• Round Bar Stock

  DIA	KG/M
  12,7 mm	1.1
  25,4 mm	4.4
  31,875 mm	6.9
  38,1 mm	1.
  41,2 mm	11.5
  45 mm	13.8
  50,8 mm	18.
  63,5 mm	27.5
  76,2 mm	39.4
  90 mm	55.1
  101,6 mm	70.2
  127 mm	110.
  152 mm	158
  165 mm	186
  177,8 mm	215
  203,2 mm	281
  215,9 mm	289
  230 mm	360
  254 mm	439
  304,8 mm	632