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List of standard alloy characteristics

List of characteristics of foundry alloys

Alloy +B4: H16 AC1B AC2A AC2B AC3A AC4A
Mechanical
properties		 Rm
(MPa)		 420 345 305 195 300
R0.2
(MPa)		 380 280 200 75 250
A
(%)		 8.0 1.6 0.9 11.6 3.2
Temper T6 T6 T6 T6 T6
Features Strength: good
Castability:
not good		 Small elongation
Castability: good		 Castability: good
For general purpose		 Fluidity,
corrosion resistance: good
Low proof stress		 Castability: good, toughness: good
For large-scale casting
Examples of
applied parts		 Parts for overhead contact lines,
automotive parts,
hydraulic parts for aircraft, etc.		 Manifolds,
pump bodies,
cylinder heads, etc.		 Cylinder heads,
crank cases, etc.		 Cases and covers with small thickness and complicated shapes Manifolds,
brake drums,
and transmission cases
Alloy +B4: H16 AC4B AC4C AC4CH AC4D AC7A
Mechanical
properties		 Rm
(MPa)		 345 285 260 320 245
R0.2
(MPa)		 250 225 157 240 105
A
(%)		 1.6 7.3 16.8 4.1 5.3
Temper T6 T6 T6 T6 F
Features High strength, small elongation
Castability: good,
for general purposes		 Castability: good
Pressure resistance, corrosion resistance: good		 Castability: good
Mechanical properties: good		 Castability: good
Pressure resistance: good		 Corrosion resistance: excellent,
anode oxidized
Castability:
not good
Examples of
applied parts		 Crank cases,
cylinder heads,
and manifolds		 Hydraulic parts,
transmission cases,
aircraft parts,
lighting components, etc.		 Wheels,
engine parts,
hydraulic parts,
aircraft parts, etc.		 Cylinder heads,
crank cases,
fuel pump bodies, etc.		 Parts for overhead contact lines,
parts for ships,
business machines,
and lighting components for aircraft
Alloy +B4: H16 AC8A AC8B AC8C AC9A AC9B
Mechanical
properties		 Rm
(MPa)		 335 335 390 150 185
R0.2
(MPa)		 310 315 255 150 155
A
(%)		 1.0 1.0 1.0 0.1 0.5
Temper T6 T6 T6 T6 T6
Features Heat resistance, wear resistance
Low thermal expansion		 Heat resistance, wear resistance
Low thermal expansion		 Heat resistance, wear resistance
Low thermal expansion		 Heat resistance, wear resistance
Low thermal expansion, castability: poor		 Heat resistance, wear resistance
Low thermal expansion, castability: poor
Examples of
applied parts		 Automotive pistons, pulleys, bearings, etc. Automotive pistons, pulleys, bearings, etc. Automotive pistons, pulleys, bearings, etc. Pistons, etc. Wheels,
engine parts,
hydraulic parts,
aircraft parts, etc.

List of characteristics of die cast alloys

Alloy ADC1 ADC3 ADC5 ADC6
Mechanical
properties		 Rm
(MPa)		 240 295 282 280
R0.2
(MPa)		 145 173 186 150
A(%)
 1.8 3.0 7.5 10.0
Hardness (HB) 72 76 74 67
Thermal conductivity
(W/m・K)		 121 113 96 138
Linear expansion
coefficient (×10-6/K)		 21.0 22.0 25.0 25.0
Alloy ADC10 ADC12 ADC14
Mechanical
properties		 Rm
(MPa)		 296 296 260
R0.2
(MPa)		 172 186 258
A(%)
 2.0 2.0 0.4
Hardness (HB) 83 86 135
Thermal conductivity
(W/m・K)		 96 96 134
Linear expansion
coefficient (×10-6/K)		 22.0 21.0 19.0

Note 1: This data is provided solely for reference purposes.
(JIS alloy data: Main reference: Japan Die Casting Association DCS M (from Material Part))
Note 2: This data does not satisfy the required characteristic values of a product.
(See the attached reference: Production Technology for Light Alloy Die Casting)
Note 3: The above characteristic values are used for comparisons between the developed alloys and the JIS alloys on our website.

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