Def Stan—Defence Standards

Defence Standards (called Def Stan) are issued by the MoD (Royal Navy). There are a number of copper alloys specified for defence applications, in many cases the requirements for these alloys are stricter than those defined in the BS EN series of standards. The current list of Def Stan includes some that have been developed from earlier standards series, e.g. NES (Naval Engineering Standard) and DGS (Director General, Ships). Def Stan include a supersession list and previous designations, to enable manufacturers to relate current standards to old specifications on component drawings.

Many of the copper alloys have been specifically selected or developed to meet certain requirements. For example, 70/30 and 90/10 copper-nickels were developed by the MoD and are now listed in national and international standards. The requirements for the aluminium bronze specified in Def Stan 02-833 define tight limits on the composition, include impact and ultrasonic testing, and specify heat treatment requirements to enhance corrosion resistance. The copper-nickel-managenese specified in Def Stan-02 835 has been developed to meet high strength, ductility and corrosion resistance requirements for applications in submarines.

To view a Def Stan copper alloy specification please visit the Defence Standards Portfolio (registration required).

Def Stan titles for copper alloys explained
Def Stan titles for copper alloys explained
Def Stan NoScopeSupersedes
Def Stan 02-747 Part 3Nickel Aluminium Bronze Castings and Ingots, Commercial Alloy Ingots and Sand CastingsNES 747 Part 3,
DGS 361
Def Stan 02-747 Part 4Nickel Aluminium Bronze Castings and Ingots—Sand castings with Welding Restricted to the Non-wetted Surface (Class I and II Castings Only)NES 747 Part 4,
DGS 348
Def Stan 02-824Copper Nickel Chromium Sand Casting and IngotsNES 824
Def Stan 02-830Gunmetal Ingots and CastingsNES 830,
DGS 203
Def Stan 02-833 Part 2Nickel Aluminium Bronze Forgings, Forging Stock, Rods & SectionsNES 833 Part 2,
DGS 1043
Def Stan 02-834 Part 3Aluminium Silicon Bronze Ingots and CastingsNES 834 Part 3
Def Stan 02-835High Strength Copper Nickel Manganese Alloy Forgings, Forging Stock Rods and SectionsNES 835
Def Stan 02-838 Part 1Phosphor Bronze—Continuously CastNES 838
Def Stan 02-838 Part 2Phosphor Bronze—Wrought Bar StockNES 838
Def Stan 02-879 Part 1
Copper Alloy Materials in HM Submarines and Surface Ships not in Class—Sheet, Strip and Plate
Annex B—Copper-nickel (70/30)Def Stan 07-253 Part 1,
NES 780
Def Stan 02-879 Part 1
Copper Alloy Materials in HM Submarines and Surface Ships not in Class—Sheet, Strip and Plate
Annex C—Copper-nickel (90/10)Def Stan 02-779 Part 1,
NES 779
Def Stan 02-879 Part 1
Copper Alloy Materials in HM Submarines and Surface Ships not in Class—Sheet, Strip and Plate
Annex D—Aluminium-silicon bronzeDef Stan 02-834 Part 1,
NES 834
Def Stan 02-879 Part 1
Copper Alloy Materials in HM Submarines and Surface Ships not in Class—Sheet, Strip and Plate
Annex E—Aluminium-nickel-silicon brassDef Stan 02-749 Part 1,
NES 749,
DGS 333
Def Stan 02-879 Part 1
Copper Alloy Materials in HM Submarines and Surface Ships not in Class—Sheet, Strip and Plate
Annex F—Nickel Aluminium BronzeDef Stan 02-833 Part 1,
NES 833 Part 1
Def Stan 02-879 Part 2
Copper Alloy Materials in HM Submarines and Surface Ships not in Class—Forgings, Forging Stock, Rods And Sections
Annex B—Copper-nickel (70/30)Def Stan 02-780 Part 2,
NES 780 Part 2
Def Stan 02-879 Part 2
Copper Alloy Materials in HM Submarines and Surface Ships not in Class—Forgings, Forging Stock, Rods And Sections
Annex C—Copper-nickel (90/10)Def Stan 02-779 Part 2,
NES 779 Part 2
Def Stan 02-879 Part 2
Copper Alloy Materials in HM Submarines and Surface Ships not in Class—Forgings, Forging Stock, Rods And Sections
Annex D—Aluminium-silicon bronzeDef Stan 02-834 Part 2,
NES 834 Part 2
Def Stan 02-879 Part 2
Copper Alloy Materials in HM Submarines and Surface Ships not in Class—Forgings, Forging Stock, Rods And Sections
Annex E—Aluminium-nickel-silicon brassDef Stan 02-749 Part 2,
NES 749 Part 2
Def Stan 02-886Requirements for Wrought Copper-Nickel-Chromium
Def Stan—Defence Standardscopperalliance.org.uk