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Japanese Industrial Standards Data – Magnesium alloy castings

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

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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).

Table 3 – Mechanical properties 
Symbol and temper designation symbol Tensile test Information reference
Tensile strength
N/mm2
Yield strength
N/mm2
Elongation
%
Brinell hardness
HBW
MC2C-F 160 min. 70 min. 50 to 65
MC2C-T4 240 min. 70 min. 6 min. 55 to 70
MC2C-T5 160 min. 80 min. 2 min. 60 to 70
MC2C-T6 240 min. 110 min. 2 min. 60 to 90
MC2E-F 160 min. 70 min. 50 to 65
MC2E-T4 240 min. 70 min. 6 min. 55 to 70
MC2E-T5 160 min. 80 min. 2 min. 60 to 70
MC2E-T6 240 min. 110 min. 2 min. 60 to 90
MC5-F 140 min. 70 min.
MC5-T4 240 min. 70 min. 6 min.
MC5-T5 160 min. 80 min.
MC5-T6 240 min. 110 min. 2 min.
MC6-T5 235 min. 140 min. 4 min. 60 to 70
MC7-T5 270 min. 180 min. 5 min.
MC7-T6 275 min. 180 min. 4 min. 65 to 75
MC8-T5 140 min. 95 min. 2 min. 50 to 60
MC9-T6 240 min. 175 min. 2 min. 70 to 90
MC10-T5 200 min. 135 min. 2 min. 55 to 70
MC11-T6 195 min. 125 min. 2 min. 55 to 65
MC12-T6 220 min. 170 min. 2 min. 75 to 90
MC13-T6 250 min. 170 min. 2 min. 80 to 90
MC14-T6 240 min. 175 min. 2 min. 70 to 90
Comparison table between JIS and related foreign standards (with material symbol)  
Standard Japanese Industrial Standard Related Foreign Standards
U.S.A U.K Germany France International Standard
JIS ASTM BS DIN NF ISO
Standard Number H2221:06 B93M:04 EN1753:97 EN1753:97 EN1753:97 16220:05
Standard Name Magnesium alloy ingot for castings Magnesium alloy ingot for sand mold, mold and die casting Magnesium alloy ingot and casting Magnesium alloy ingot and casting
Material Symbol MCI2C AZ91C
MCI2E AZ91E EN-MB21120 MgAl9Zn1(A)
MCI5 AM100A
MCI6 ZK51A
MCI7 ZK61A
MCI8 EZ33A EN-MB65120 MgRE3Zn2Zr
MCI9 QE22A EN-MB65210 MgAg2RE2Zr
MCI10 ZE41A EN-MB35110 MgZn4RE1Zr
MCI11 ZC63A EN-MB32110 MgZn6Cu3Mn
MCI12 WE43A EN-MB95320 MgY4RE3Zr
MCI13 WE54A EN-MB95310 MgZn6Cu3Mn
MCI14 QE21A EN-MB65220 MgRE2Ag1Zr
Standard Japanese Industrial Standard Related Foreign Standards
U.S.A U.K Germany France International Standard
JIS ASTM BS DIN NF ISO
Standard Number H2222:06 B93M:04 EN1753:97 EN1753:97 EN1753:97 16220:05
Standard Name Magnesium alloy ingot for die castings Magnesium alloy ingot for sand mold, mold and die casting Magnesium alloy ingot and casting Magnesium alloy ingot and casting
Material Symbol MD1B AZ91B
MD1D AZ91D EN-MB21120 MgAl9Zn1(A)
MD2B AM60B EN-MB21230 MgAl6Mn
MD3B AS41B EN-MB21320 MgAl4Si
MD4 AM50A EN-MB21220 MgAl5Mn
MD5 EN-MC21210 MgAl2Mn
MD6 AS21A EN-MB21310 MgAl2Si
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