ASTM B107/B107M : 12

Standard Specification for Magnesium-Alloy Extruded Bars, Rods, Profiles, Tubes, and Wire

Standard Details

1.1 This specification covers magnesium-alloy extruded bars, rods, profiles, tubes, and wire of the composition given in Table 1.

TABLE 1 Chemical Requirements^A

Note 1—Analysis shall regularly be made only for the elements specifically mentioned in this table. If, however, the presence of other elements is suspected or indicated in the course of routine analysis to be in amounts greater than the specified limits, further analysis shall be made to determine that the total of these other elements is not in excess of the limits specified in the last column of the table.

Note 2—The following applies to all specified limits in this table: For purposes of acceptance and rejection, an observed value or a calculated value obtained from analysis should be rounded-off to the nearest unit in the last right-hand place of figures used in expressing the specified limit.

Alloy^B		Composition, %
UNS No.	ASTM No.	Magnesium	Alumi- num	Cal- cium	Cop- per	Iron	Lithium	Man- ganese	Neodymium	Nickel	Rare Earths	Sili- con	Yttrium	Zirco- nium, min	Zinc	Other Impurities, each	Total Other^C Impurities
M11311	AZ31B	remainder	2.5-3.5	0.04	0.05	0.005		0.20-1.0		0.005		0.10		...	0.6-1.4		0.30
M11312	AZ31C	remainder	2.4-3.6	...	0.10	...		0.15-1.0^D		0.03		0.10		...	0.50-1.5		0.30
M11610	AZ61A	remainder	5.8-7.2	...	0.05	0.005		0.15-0.5		0.005		0.10		...	0.40-1.5		0.30
M11800	AZ80A	remainder	7.8-9.2	...	0.05	0.005		0.12-0.5		0.005		0.10		...	0.20-0.8		0.30
M15100	M1A	remainder	...	0.30	0.05	...		1.2-2.0		0.01		0.10		...	...		0.30
M18432	WE43B	remainder	...	...	0.02	0.010	0.2	0.03	2.0-2.5	0.005	1.9^E	...	3.7-4.3	0.40-1.0	^F	0.01	...
M18410	WE54A	remainder	...	...	0.03	...	0.2	0.03	1.5-2.0	0.005	2.0^E	0.01	4.75-5.5	0.40-1.0	0.20	0.2	...
M16400	ZK40A	remainder	...	...	...	...		...		...		...		0.45	3.5–4.5		0.30
M16600	ZK60A	remainder	...	...	...	...		...		...		...		0.45	4.8-6.2		0.30

^A Limits are in weight percent maximum unless shown as a range or otherwise stated.

^B These alloy designations were established in accordance with Practice B951 (see also Practice E527).

^C Includes listed elements for which no specific limit is shown.

^D Manganese minimum limit need not be met if iron is 0.005 %, or less.

^E Other Rare Earths shall be principally heavy rare earths, for example, Gadolinium, Dysprosium, Erbium, and Ytterbium. Other Rare Earths are derived from the Yttrium, typically 80 % Yttrium 20 % heavy rare earths.

^F Zinc + Silver content shall not exceed 0.20 % in WE43B.

1.2 The values stated in either inch-pound or SI units are to be regarded separately as StandardDetails. The SI units are shown in brackets or in separate tables or columns. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other. Combining values from the two systems may result in nonconformance with the specification.

1.3 Unless the order specifies the “M” specification designation, the material shall be furnished to the inch-pound units.