Artillery & military transportation

Aubert & Duval meets the defense industry’s material requirements for artillery forgings, drawing on extensive, worldwide experience in artillery systems.

Caliber

Aubert & Duval can provide artillery forging materials for large gun barrels, drawing on its long history of supplying forgings and materials for proven artillery systems.

 

  • `Medium calibers: 20 – 76 mm
  • Large calibers: 76 – 155 mm

Applications design

  • Artillery forging materials for large gun barrels can be provided by Aubert & Duval, which has a long history of supplying forgings and materials for proven artillery systems.Tank gun barrel forgings
  • Self-propelled howitzer forgings
  • Naval guns
  • Helicopter and aircraft barrels
  • Mortar barrels

Increasing system life

  • Aubert & Duval CLARM® grades have the unique ability to:

 

o Reduce thickness to save weight

o Increase systems’ service life

o Accept more and more powerful ammunitions

 

  • Aubert & Duval has the capability to vertically heat treatment barrels to minimize distortion and residual stresses for artillery forgings, avoiding barrel deformation after firing

 

  • Production capacity can be adjusted in accordance with our customers’ needs

Grade design

The choice of steel grade for gun barrel forgings is mainly governed by a compromise between yield strength (YS) and toughness at low temperatures (KV-40°C).Among the steel grades for artillery forgings available from Aubert & Duval, three are especially designed for gun blanks and mortar barrel forgings. They are:

  • CLARM®HBR,
  • CLARM®HB3
  • CLARMHB7® 

 

The CLARM® family is famous worldwide for its exceptional combination of tensile strength, ductility and toughness. The steel grade choice is mainly governed by the required compromise between yield strength (YS) and toughness at low temperature (KV-40°C). See adjacent drawing.

Mechanical design

Standard data for the guaranteed minimum mechanical properties of 155L52 or 120L52 barrel blanks (breech side, mid-wall thickness) are shown below. For special requirements please contact us.

CLARM HBR

CLARMHB3

Through hardening steels

CLARMHB7

Through hardening steels

Breech block - Breech ring design

Aubert & Duval can provide artillery forging materials for breech blocks, drawing on  its long history of supplying forgings and materials for proven artillery systems.Aubert & Duval also manufactures artillery components such as breech blocks and breech rings. Breech blocks are heavy wall thickness components that require the right steel grade choice to guarantee homogenous mechanical properties throughout the component, and achieve the best possible compromise on tensile strength/ductility and toughness. The CLARM® steel grade family covers a wide range of component sizes and all usual mechanical specifications.

Mortar grade design

Aubert & Duval can provide artillery forgings or rolled bar materials for mortars, drawing on its long history of supplying forgings and materials for proven artillery systems.In addition to artillery forgings and breech parts, Aubert & Duval offers advanced materials for mortars.

 

  • GKH ® (32CrMoV12-10)
  • FDMA (30NiCrMo16)
  • (30NiCrMoV14)
  • (32NiCrMoV14)
  • (40NiCrMoV15)
  • 718 alloy nickel base superalloy
  • ARMAD™

Metal Powders for additive manufacturing

Aubert & Duval can provides metal powders for 3D-printing of manufactured parts for armoured vehicles and artillery applications, find out more

 

For specific grades, dimensions or applications contact us.

BROCHURES

Defense

GKH ®

See also:

GKH

Steels for nitriding

ARMAD

Through hardening steels

FDMA

Through hardening steels

MARVALX12H

Stainless steels with structural hardening