Aluminium Alloys

Aluminum Alloys industry is an important part of non-ferrous cast metal industry. Aluminum alloys encompasses a combination of aluminum metal and other alloying elements. It supports in maintaining the precise chemical specifications in the finished products.

Aluminium foundry alloys are used for aluminium castings

Gravita’s production is based on Secondary aluminium. Consistent high metal quality is ensured using top-grade raw materials and applying best practices. Our foundry alloys are produced to meet individual customer specifications in the main alloy groups meeting specifications in accordance with BS and JIS standards.

Please refer the tables below to understand Product Code

JIS – Chemical Composition (% by weight )

Alloy Cu Si Mg Zn Fe Mn Cr Ni Sn Pb Ti Al
ADC1 1.0 max 11.0 to 13.0 0.3 max 0.5 max 1.3 max 0.3 max 0.5 max 0.1 max 0.20 max 0.30 max Balance
ADC3 0.6 max 9.0 to 11.0 0.4 to 0.6 0.5 max 1.3 max 0.3 max 0.5 max 0.1 max 0.15 max 0.30 max Balance
ADC5 0.2 max 0.3 max 4.0 to 8.5 0.1 max 1.8 max 0.3 max 0.1 max 0.1 max 0.1 max 0.20 max Balance
ADC6 0.1 max 1.0 max 2.5 to 4.0 0.4 max 0.8 max 0.4 to 0.6 0.1 max 0.1 max 0.1 max 0.20 max Balance
ADC10 2.0 to 4.0 7.5 to 9.5 0.3 max 1.0 max 1.3 max 0.5 max 0.5 max 0.2 max 0.20 max 0.30 max Balance
ADC10Z 2.0 to 4.0 7.5 to 9.5 0.3 max 3.0 max 1.3 max 0.5 max 0.5 max 0.2 max 0.20 max 0.30 max Balance
ADC12 1.5 to 3.5 9.6 to 12.0 0.3 max 1.0 max 1.3 max 0.5 max 0.5 max 0.2 max 0.20 max 0.30 max Balance
ADC12Z 1.5 to 3.5 9.6 to 12.0 0.3 max 3.0 max 1.3 max 0.5 max 0.5 max 0.2 max 0.20 max 0.30 max Balance
ADC14 4.0 to 5.0 16.0 to 18.0 0.45 to 0.65 1.5 max 1.3 max 0.5 max 0.3 max 0.3 max 0.20 max 0.30 max Balance
AC4B 2.0 to 4.0 7.0 to 10.0 0.5 max 1.0 max 0.8 max 0.5 max 0.20 max 0.35 max 0.10 max 0.20 max 0.20 max Balance
AC2B 2.0 to 4.0 5.0 to 7.0 0.5 max 1.0 max 0.8 max 0.5 max 0.20 max 0.35 max 0.10 max 0.20 max 0.20 max Balance
AlSi9Mg 0.03 max 9.0 to 10.0 0.30 to 0.45 0.07 max 0.15 max 0.10 max 0.15 max Balance
AlSi10Mg 0.08 max 9.0 to 11.0 0.25 to 0.45 0.10 max 0.45 max 0.45 max 0.05 max 0.05 max 0.05 max 0.15 max Balance
AlSi9Cu1Mg 0.8 to 1.3 8.3 to 9.7 0.30 to 0.65 0.80 max 0.7 max 0.15 to 0.55 0.20 max 0.10 max 0.10 max 0.10 to 0.18 Balance
AlSi9Cu3(Fe) 2.0 to 4.0 8.0 to 11.0 0.05 to 0.55 3.0 max 1.3 max 0.55 max 0.15 max 0.55 max 0.25 max 0.35 max 0.25 max Balance
AlSi12Cu1(Fe) 0.7 to 1.2 10.5 to 13.5 0.35 max 0.55 max 1.3 max 0.55 max 0.10 max 0.30 max 0.10 max 0.20 max 0.20 max Balance

BS – Chemical Composition ( % by weight)

Alloy Cu Mg Si Fe Mn Ni Zn Pb Sn Ti Al
LM0 0.03 0.03 0.3 0.4 0.03 0.03 0.07 0.03 0.03 Balance
LM2 0.7-2.5 0.3 9.0-11.5 1.0 0.5 0.5 2.0 0.3 0.2 0.2 Balance
LM4 2.0-4.0 0.2 4.0-6.0 0.8 0.2-0.6 0.3 0.5 0.1 0.1 0.2 Balance
LM5 0.1 3.0-6.0 0.3 0.6 0.3-0.7 0.1 0.1 0.05 0.05 0.2 Balance
LM6 0.1 0.1 10.0-13.0 0.6 0.5 0.1 0.1 0.1 0.05 0.2 Balance
LM9 0.2 0.2-0.6 10.0-13.0 0.6 0.3-0.7 0.1 0.1 0.1 0.05 0.2 Balance
LM12 9.0-11.0 0.2-0.4 2.5 1.0 0.6 0.5 0.8 0.1 0.1 0.2 Balance
LM13 0.7-1.5 0.8-1.5 10.0-13.0 1.0 0.5 1.5 0.5 0.1 0.1 0.2 Balance
LM14 3.5 – 4.5 1.2 – 1.7 0.6 0.6 0.6 1.8 – 2.3 0.1 0.05 0.05 0.2 Balance
LM15 0.3 – 3.0 0.5 – 1.7 0.6 – 2.0 0.8 – 1.4 0.1 0.5 – 2.0 0.1 0.05 0.05 0.05 – 0.3 Balance
LM16 1.0-1.5 0.4-0.6 4.5-5.5 0.6 0.5 0.25 0.1 0.1 0.05 0.2 Balance
LM20 0.4 0.2 10.0 – 13.0 1.0 0.5 0.1 0.2 0.1 0.1 0.2 Balance
LM21 3.0 – 5.0 0.1 – 0.3 5.0 – 7.0 1.0 0.2 – 0.6 0.3 2 0.2 0.1 0.2 Balance
LM22 2.8 – 3.8 0.05 4.0 – 6.0 0.6 0.2 – 0.6 0.15 0.15 0.1 0.05 0.2 Balance
LM24 3.0 – 4.0 0.3 7.5 – 9.5 1.3 0.5 0.5 3.0 0.3 0.2 0.2 Balance
LM25 0.2 0.2 – 0.6 6.5 – 7.5 0.5 0.3 0.1 0.1 0.1 0.05 0.2 Balance
LM26 2.0 – 4.0 0.5 – 1.5 8.5 – 10.5 1.2 0.5 1.0 1.0 0.2 0.1 0.2 Balance
LM27 1.5 – 2.5 0.35 6.0 – 8.0 0.8 0.2 – 0.6 0.3 1.0 0.2 0.1 0.2 Balance
LM28 1.3 – 1.8 0.8 – 1.5 17 – 20 0.7 0.6 0.8 – 1.5 0.2 0.1 0.1 0.2 Balance
LM29 0.8 – 1.3 0.8 – 1.3 22 – 25 0.7 0.6 0.8 – 1.3 0.2 0.1 0.1 0.2 Balance
LM30 4.0 – 5.0 0.4 – 0.7 16 – 18 1.1 0.3 0.1 0.2 0.1 0.1 0.2 Balance
LM31 0.1 0.5 – 0.75 0.25 0.5 0.1 0.1 4.8 – 5.7 0.05 0.05 0.25 Balance

Key features

  • Excellent castability
  • High and consistent metal quality
  • Low level of impurities and trace elements

Product details

Alloys are produced as continuous cast or mold cast ingots. The products are stacked and strapped into bundles of various sizes. Depending on the particular production source, our foundry alloy ingots are supplied in weights of 5-6 kg, and bundle weights can range from 500-800 kg.

Most used alloy groups:

  • ADC12 – alloys
  • ADC6 – alloys
  • HS1 – alloys
  • AC4B alloys
  • LM24 alloys
  • LM6 alloys
  • HD4 – alloys

Application areas

Automotive and transport:

  • Wheels
  • Chassis components as brake parts and suspension parts
  • Cylinder heads

Other applications:

  • Electrical applications
  • Decorative / anodized applications and/or where highest corrosion resistance is sought

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