Detailed information:
Chinese name 7A15
Elongation rate ≥ 6
Tensile strength ≥ 470
Sample size, all thicknesses
Standard: GB/T 4437.1-2000
● Chemical composition:
Aluminum Al: Excess
Silicon Si: ≤ 0.50
Copper Cu: 0.50-1.0
Magnesium Mg: 2.4~3.0
Zinc Zn: 4.4~5.4
Manganese Mn: 0.10~0.40
Titanium Ti: 0.05-0.15
Beryllium Be: 0.005-0.01
Chromium Cr: 0.10~0.30
Iron Fe: 0.0000-0.500
Note: Single: ≤ 0.05; Total: ≤ 0.15
● Mechanical properties:
Tensile strength σ b (MPa): ≥ 470
Conditional yield strength σ 0.2 (MPa): ≥ 420
Elongation rate δ 10 (%): ≥ 6
Note: Longitudinal mechanical properties of pipes at room temperature
Sample size: All thicknesses
● Heat treatment specifications:
1) Complete annealing: Heating at 390-430 ℃; The insulation time varies from 30 to 120 minutes depending on the effective thickness of the material; Cool the furnace at a rate of 30-50 ℃/h to 300 ℃, and then air cool. 2) Rapid annealing: heating at 350-370 ℃; The insulation time varies from 30 to 120 minutes depending on the effective thickness of the material; Empty or water-cooled. 3) Quenching and aging: quenching at 500-510 ℃, air cooling; Artificial aging: 95-105 ℃, 3h, air-cooled; Natural aging at room temperature for 120 hours
1. The company has established long-term and stable cooperative relationships with multiple well-known steel mills at home and abroad, all of which provide original material certification
2. Wholesale and retail, with favorable prices, superior quality (large quantities are preferred), and timely and fast delivery
5. Wide channels, sufficient supply of goods, and business scope covering all parts of the country, can meet the needs of customers in various regions
Sincerely welcome new and old customers from all walks of life to call and inquire about and negotiate business at any time. Our high-quality products and reasonable prices will definitely meet your requirements!
Welcome new and old customers to call for consultation and negotiation.