Skip to Main Contents

Yamaha Motor Revs Your Heart

OEM Casting and Forging

Japanese Industrial Standards Data – Magnesium alloy castings

A chart listing magnesium alloy ingots for casting standardized by the Japanese Industrial Standards.

MENU

Japanese Industrial Standards

JIS H 5203 : 2006

Magnesium alloy castings

Preface

The chart below is from the Japanese Industrial Standards and is based on the information contained in ISO 16220: Magnesium and magnesium alloys−Magnesium alloy ingots and castings (2nd revision) published in 2005.

Table 2 – Chemical Composition 
Class Symbol Chemical Composition % (mass fraction)
Mg Al Zn Zr Mn RE(1) Y Ag Si Cu Ni Fe Others
Individual
Casting Class 2C MC2C Remainder 8.1 to 9.3 0.40 to 1.0 0.13 to 0.35 0.30 max. 0.10 max. 0.01 max. 0.03 max. 0.05 max.
Casting Class 2E MC2E Remainder 8.1 to 9.3 0.40 to 1.0 0.17 to 0.35 0.20 max. 0.015 max. 0.0010 max. 0.005 max. 0.01 max.
Casting Class 5 MC5 Remainder 9.3 to 10.7 0.30 max. 0.10 to 0.35 0.30 max. 0.10 max. 0.01 max. 0.01 max.
Casting Class 6 MC6 Remainder 3.6 to 5.5 0.50 to 1.0 0.10 max. 0.01 max. 0.01 max.
Casting Class 7 MC7 Remainder 5.5 to 6.5 0.6 to 1.0 0.10 max. 0.01 max. 0.01 max.
Casting Class 8 MC8 Remainder 2.0 to 3.1 0.50 to 1.0 0.15 max. 2.5 to 4.0 0.01 max. 0.10 max. 0.01 max. 0.01 max. 0.01 max.
Casting Class 9 MC9 Remainder 0.2 max. 0.4 to 1.0 1.8 to 2.5 2.0 to 3.0 0.01 max. 0.10 max. 0.01 max. 0.01 max. 0.01 max.
Casting Class 10 MC10 Remainder 3.5 to 5.0 0.4 to 1.0 0.15 max. 0.75 to 1.75 0.01 max. 0.10 max. 0.01 max. 0.01 max. 0.01 max.
Casting Class 11 MC11 Remainder 5.5 to 6.5 0.25 to 0.75 0.20 max. 2.4 to 3.0 0.01 max. 0.05 max. 0.01 max.
Casting Class 12 MC12 Remainder 0.2 max. 0.40 to 1.0 0.15 max. 2.4 to 4.4 3.7 to 4.3 0.01 max. 0.03 max. 0.005 max. 0.01 max. 0.01 max.
Casting Class 13 MC13 Remainder 0.2 max. 0.40 to 1.0 0.03 max. 1.5 to 4.0 4.75 to 5.5 0.01 max. 0.03 max. 0.005 max. 0.01 max. 0.01 max.
Casting Class 14 MC14 Remainder 0.2 max. 0.4 to 1.0 0.15 max. 1.5 to 3.0 1.3 to 1.7 0.01 max. 0.05 to 0.10 0.01 max. 0.01 max. 0.01 max.

Note(1) The abbreviation of “RE” means the rare earth elements other than yttrium (Y).

NOTES 1. When harmful impurities other than those specified in this table are supposed to exist, the tolerance limit for the impurities may be specified as agreed upon between the purchaser and the manufacturer. However, the specified value shall not exceed 0.01% (mass friction).

    2. The RE elements in casting Class 8 and casting Class 10 are mainly cerium (Ce).

    3. The RE elements in casting Class 9 and casting Class 14 are the didymium which is composed of at least 70 % (mass fraction) neodymium (Nd) and most of the remainder praseodymium (Pr).

    4. The RE elements in casting Class 12 are neodymium (Nd) of 2.0 to 2.5 % (mass fraction) and other heavy rare elements.

    5. The RE elements in casting Class 13 are neodymium (Nd) of 1.5 to 2.0 % (mass fraction) and other heavy rare elements.

    6. The content of lithium (Li) of casting Class 12 and casting Class 13 shall be 0.2 % or less (mass fraction).

Back to
Top