Magnesium-Aluminum-Zinc 
Steel Sheet

1  Red rusts occur
2  Coated components dissolve
3  Sacrificial oxidation

4  Cross-section zinc disappears


High-tensile magnesium-aluminum-zinc steel sheet

Magnesium-aluminum-zinc steel plates are highly resistant to salt damages, corrosion, strong alkali and ammonia and are capable of self-healing.

Stage process

Because the substrate is exposed after cutting, red rust occurs in the initial stage. However, when the plating components around the cutting section are released, sacrificial oxidation results in the creation of a dense protective film composed of Zn(OH)2, ZnCl2·4Zn(OH)2, and Mg(OH)2. This film covers the cutting section within a few months. The low conductivity nature of the protective film inhibits corrosion on the cutting section. Additionally, the formation of said protective film.

Steel grades: HRC ( T ≧ 1.6㎜ )


 Standard Mechanical properties ZAM-EX ZAM-EX Mechanical properties
Crade DIN EN 10346 YP(min) TS(min) EL(min) NSC Standard JIS YP(min) TS(min) EL(min)
Structural EN-S280GD 280 360 18
SGMH400 295-400 400 18
Structural EN-S320GD 320 390 17 SGMH440 335 440 18
Structural EN-S350GD 350 420 16 NSDH-G350 SGMH490 365 490 16
Structural EN-S390GD 390 460 16
SGMH540 400 540 16

Steel grades: CRC ( T ≦ 2.3㎜ )


 Standard Mechanical properties ZAM-EX ZAM-EX Mechanical properties
Crade DIN EN 10346 YP(min) TS(min) EL(min) NSC Standard JIS YP(min) TS(min) EL(min)
Structural EN-S280GD 280 360 18
SGMC400 295-400 400 18
Structural EN-S320GD 320 390 17 SGMC440 335 440 18
Structural EN-S350GD 350 420 16 NSDC-G350 SGMC490 365 490 16