Uses including aerospace, aircraft, concrete tools, 3C (cell phone / camera / computer), speaker cones and textile machinery

AZ31B is a wrought magnesium base alloy with good room-temperature strength and ductility combined with corrosion resistance and weldability. Increased strength is obtained by strain hardening with a subsequent partial anneal (H24 and H26 tempers). Our sheet and plate’s size range is:

Sheet: thickness from 0.5mm to 6mm; Max. width is 600mm; Max. length is 6000mm;

Plate: thickness from 6 mm to 200mm; Max. width is 2000mm; Max. length is 6000mm;

Block: We can supply cut-to-size blocks according to customer’s requirements.

APPLICATIONS

Sheet and plate in AZ31B find application in medium strength service at temperatures below 150°C. Diverse uses including aerospace, aircraft, concrete tools, 3C (cell phone / camera / computer), speaker cones and textile machinery can all benefit from light weight AZ31B.

AZ31B is non-magnetic and has high electrical and thermal conductivity filling the requirements for RFI and EMI shielding in the electronics and computer industries.

Superplastic forming of AZ31B sheet at elevated temperatures allows production of a wide variety of intricate parts for automotive uses. Monocoque construction utilizing formed sheet can be adapted to many commercial applications.

SPECIFICATIONS

ASTM B90/B90M-07

AMS 4375

AMS 4376

AMS 4377

CHEMICAL COMPOSITION

Al: 2.5-3.5%

Zn: 0.7-1.3%

Mn: 0.20 – 1.0%

Mg: Balance

PHYSICAL PROPERTIES

Density: 1.78

Coefficient of thermal expansion: 26.8 x 10-6K-1

Specific heat: 1040 Jkg-1k-1

Thermal conductivity: 76.9Wm-1k-1

Electrical resistivity: 92nΩm

Modulus of elasticity: 45 x 109Pa

Poissons ratio: 0.35

Melting range: 566 - 632°C

HEAT TREATMENT

No thermal treatment is available for increasing the strength of this alloy after fabrication.

MECHANICAL PROPERTIES

Alloy and Temper	Thickness (mm)	Yield Strength 0.2% offset (MPa)	Tensile strength (MPa)	Elongation In 5.65 √A (%)
AZ31B-O	0.5 – 1.5	125	221	10
	1.5 – 6.3	105	221	9
	6.3 - 75	105	221	8
AZ31B-H24	0.5 – 6.3	200	269	5
	6.3 -9.5	179	262	7
	9.5 – 12.7	165	255	8
	12.7 - 25	152	248	8
	25- 50	138	234	6
	50 - 80	124	234	7
AZ31B-H26	6.3 - 10	186	269	6
	10 – 12.5	179	262	6
	12.5 - 20	172	255	5
	20 – 25	159	255	5
	25 - 40	152	241	5
	40 - 50	148	241	5

The sheet and plate shall conform to the tensile requirements in above Table unless other agreement is made between seller and purchaser. Mechanical Properties for sizes and tempers not shown in above Table shall be as agreed upon by seller and purchaser.

Magnesium plate