Gilding Metal Clad Steel (gmcs) Brass Steel Bullet Envelope Materials/Bimetallic Sheet Composite
Gilding Metal Clad Steel (gmcs) Brass Steel Bullet Envelope Materials/Bimetallic Sheet Composite

Gilding Metal Clad Steel (gmcs) Brass Steel Bullet Envelope Materials/Bimetallic Sheet Composite

Package Size 1000.00cm * 1000.00cm * 800.00cm Package Gross Weight 2000.000kg The military gilding metal clad steel stri

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DESCRIPTION

Basic Info.
Model NO. H90/F11/F18
PCD Can Stretch Stamping
ET Nothing
Hole Nothing
Performance Soft
Transport Package Wooden Support or Wooden Box or Iron Box
Specification thickness 0.5mm-4mm
Trademark Estar
Origin Ningbo
HS Code 721260000
Production Capacity 5000 T / a
Packaging & Delivery
Package Size 1000.00cm * 1000.00cm * 800.00cm Package Gross Weight 2000.000kg
Product Description
The military gilding metal clad steel strip is made of high quality special steel as the base material and H90(C22000) brass as the composite material. The technology of warm pressing and high processing rate (forming complete mechanical meshing between brass and steel) and high temperature heat treatment infiltration process (mutual infiltration between Cu and Fe molecules) are adopted. Therefore, there is a metallurgical bonding layer composed of mutually permeable copper and iron between two metals, so that copper and steel can be permanently bonded without splitting, and can be processed as a single metal. The military gilding metal clad steel strip combines the characteristics of two metals. It has the advantages of corrosion resistance, lubrication, wear resistance and beauty of H90(C22000)brass metal. It also has high strength and good ductility of special steel. The good comprehensive performance of gilding metal clad steel manufactured by warm pressing infiltration composite production method is unmatched by manufactured by traditional composite method. In addition to having the common characteristics of high strength, good heat resistance, thermal stability, plasticity, corrosion resistance and wear resistance of composite materials, compared with the traditional composite process, produced by warm pressing infiltration process has the following advantages:A: High dimensional accuracy, which is conducive to improving the quality of bullets;B: The composite has good consistency, so as to ensure the consistency of warhead and cartridge case;C: One batch has large weight and can be processed continuously, which greatly improves the production efficiency of bullets;D: It has excellent surface quality, and comparable to pure copper.i)Military Products
Standard sizeBrass-steel-brassBrass-steel-brassBrass-steel-brass
Strip width78/87/91/114/135139.5mm124/135/137/140/155mm< 600 mm
Strip thickness1.7-3.6mm0.5-1.37mm0.05-4.0 mm
Coating thickness3.4%-4%3.4%-4%3%-15 %
Base materialF18 steelF11 steelSPHC steel
Cladding materialH90 copperH90 copperH90 copper
Delivery formCoil / PlateCoil / PlateCoil / Plate

ii)Chemical Composition

Grade

Chemical composition of steel strip

C

Si

Mn

P

S

Ni

Cr

Cu

Als

%

%

%

%

%

%

%

%

%

F11

≤0.11

≤0.06

0.30-0.55

≤0.02

≤0.01

≤0.3

≤0.15

≤0.2

0.02-0.1

F18

0.11-0.19

≤0.06

0.35-0.55

≤0.02

≤0.01

≤0.3

≤0.15

≤0.2

0.02-0.1

SPHC

≤0.15

≤0.05

≤0.6

≤0.035

≤0.035

-

-

-

≥0.010

Grade

Chemical composition of copper strip

Cu+Ag

(min)

P

Bi

Sb

As

Fe

Pb

S

Zn

Total impurities

%

%

%

%

%

%

%

%

%

%

H90

88-91

-

-

-

-

≤0.1

≤0.02

-

allowance

≤0.2


iii)Mechanical properties and metallographic structure

material

tensile strength(Mpa)

Elongation(%)

Grain size

Pearlite

Non-metallic inclusions A/B/C/D

Annealed

half hard

Annealed

half hard

H90/SPHC/H90

290~355

360~455

≥36%

≥8%

7-10

1-5

≤2.5

H90/F11/H90

265~365

-

≥43%

-

7-10

1-5

≤2.5

H90/F18/H90

305~395

-

≥37%

-

7-10

2-6

≤2.5

Gilding Metal Clad Steel (gmcs) Brass Steel Bullet Envelope Materials/Bimetallic Sheet Composite


iv)Equipment Introduction

Gilding Metal Clad Steel (gmcs) Brass Steel Bullet Envelope Materials/Bimetallic Sheet Composite


2000tons Compound rolling mill

Gilding Metal Clad Steel (gmcs) Brass Steel Bullet Envelope Materials/Bimetallic Sheet Composite


20-High finishing mill

Gilding Metal Clad Steel (gmcs) Brass Steel Bullet Envelope Materials/Bimetallic Sheet Composite


Bell type annealing furnace

Gilding Metal Clad Steel (gmcs) Brass Steel Bullet Envelope Materials/Bimetallic Sheet Composite


950 Finishing mill