Gun barrel of firearms
AssigneeBoehler Edelstahl GmbH & Co. KG
InventorsDevrim CALISKANOGLU, Herbert SCHWEIGER, Ingo SILLER
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Abstract
Gun barrel for firearms made from a deformed material and method for producing the gun barrel material. The material has a chemical composition in % by weight of: Content C Si Mn P S Cr Mo Min 0.28 0.08 0.15 3.6 1.2 Max 0.36 0.26 0.35 0.005 0.002 4.4 1.8 Content Ni V W Ti As + Sn + Sb Fe Min 0.42 Rest Max <0.5 0.5 0.15 0.08 0.007 and impurities due to smelting. The material has a hardness of at least 46 to 48 HRC.
Claims10
A gun barrel for firearms made from a deformed material comprising a chemical composition in % by weight of:
- Content
- C
- Si
- Mn
- P
- S
- Cr
- Mo
- Ni
- V
- W
- Ti
- As + Sn + Sb
- Fe
- Min
- 0.28
- 0.08
- 0.15
- 3.6
- 1.2
- 0.42
- Rest
- Max
- 0.36
- 0.26
- 0.35
- 0.005
- 0.002
- 4.4
- 1.8
- <0.5
- 0.5
- 0.15
- 0.08
- 0.007
- and impurities due to smelting,
- wherein the material has a hardness of at least 46 to 48 HRC.
A method for producing a material for gun barrels for firearms, comprising:
- quenching and tempering the material in a vacuum heat treatment, the material having a chemical composition of:
- 0.28-0.36% wt. of C;
- 0.08-0.26% wt. of Si;
- 0.15-0.35% wt. of Mn;
- <0.005% wt. of P;
- <0.002% wt. of S;
- 3.6-4.4% wt. of Cr;
- 1.2-1.8% wt. of Mo;
- <0.5% wt. of Ni;
- 0.42-0.5% wt. of V;
- <0.15% wt. of Ti;
- <0.007% wt. of As+Sb+Sb;
- with a remainder of Fe and impurities from smelting;
- hardening the material at least once at a temperature between 940° C. and 995° C., with a retention time at the hardening temperature of at least 20 min.;
- and
- tempering the hardening material at least twice at a temperature of more than 575° C.
Dependencies are inferred from the claim text.