H90/F11/F18
Copper
Copper-Steel-Copper
Cu90zn10/F11/F18/SPHC/DC04/Cu90zn10
Soft
Estar
Wooden Support or Wooden Box or Iron Box
thickness 0.5mm-4mm
Ningbo
721260000
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
ii)Chemical Composition
iii)Mechanical properties and metallographic structure
iv)Equipment Introduction
2000tons Compound rolling mill
20-High finishing mill
Bell type annealing furnace
950 Finishing mill
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 size | Brass-steel-brass | Brass-steel-brass | Brass-steel-brass |
| Strip width | 78/87/91/114/135139.5mm | 124/135/137/140/155mm | < 600 mm |
| Strip thickness | 1.7-3.6mm | 0.5-1.37mm | 0.05-4.0 mm |
| Coating thickness | 3.4%-4% | 3.4%-4% | 3%-15 % |
| Base material | F18 steel | F11 steel | SPHC steel |
| Cladding material | H90 copper | H90 copper | H90 copper |
| Delivery form | Coil / Plate | Coil / Plate | Coil / 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 |
iv)Equipment Introduction
2000tons Compound rolling mill
20-High finishing mill
Bell type annealing furnace
950 Finishing mill
