Engineering Property Comparison Chart Wing Screws, nuts and zinc die cast

Engineering Property Comparison

ALLOY PROPERTY		Zinc							Aluminium		Magnesium	Brass	Steel
ALLOY PROPERTY		ZAMAK 2**	ZAMAK 3**	ZAMAK 5**	ZAMAK 7**	ZA-8***	ZA-27***	AcuZinc 5380	380	390	AZ-910	360	1008 /1010
		Die Cast	Die Cast	Die Cast	Die Cast	Die Cast	Die Cast	Die Cast	Die Cast	Die Cast	Die Cast	1/2 Hard	Cold Drawn
MECHANICAL
Ultimate Tensil Strength	psi x 103 MPa	52 359	41 283	48 331	41 283	54 374	62 426	5.9 407	47 324	41	34 234	55	538
Yield Strength 0.2% Offset	psi x 103 MPa	N/A	32 221	33 228	N/A	42 290	54 371	4.9 338	24 165	35	23 159	25	448
Elongation (%in 2 in.)		7	10	7	14	8	2.5	5	3.0	1	3	10	20
Young's Modulus	psi x 103 MPa x 103	>12.4 >85.5	>12.4 >85.5	>12.4 >85.5	>12.4 >85.5	12.4 85.5	11.3 77.9	10.0	10.3 71.0	11.9	6.5 44.8	14	—
Torsonial Modulus	psi x 103 MPa x 103	>4.8 >33.1	>4.8 >33.1	>4.8 >33.1	>4.8 >33.1	4.8 33.1	4.3 29.6	N/A	3.9 26.9	N/A	2.4 16.5	—	—
Shear Strength	psi x 103 MPa	46 317	31 214	38 262	31 214	40 275	47 275	41 280	27 186	N/A	20 138	—	—
Hardness (Brinell)		100	82	91	76	103	119	118	80	120	120	60/80 Rb	1058 Rb
Imapct Strength	ft- lb J	352 47	432 58	482 65	432 58	312 42	92 13	N/A	31 4	5	275 3.7	—	—
Failure Strength Rotary Bend (5 x 103 cycles)	psi x 103	8.5 58.6	6.9 47.6	8.2 56.5	6.8 46.9	15 103	21 145	N/A	20 138	N/A	14 97	—	—
Compression Yield Strength 0.1% Offset	psi x 103	936 641	606 414	876 600	606 414	37 252	52 359	N/A	—	N/A	23 159	—	—
PHYSICAL
Density	lb/in3 kg/in3	0.24 6600	0.24 6600	0.24 6600	0.24 6600	0.227 6300	0.181 6850	0.247 6850	0.098 1827	0.099	0.066 1827	0.307	0.281
Melting Range	0F 0C	715- 734 379- 390	718- 728 381- 387	717- 727 380- 387	718- 728 381- 387	707-759 375-404	708-936 402-502	1000-1100 538-593	945-1200	875-1105 468-596	1630-1650 885-900		—
Electrical Conductivity (%IACS)		25	27	26	27	27.7	29.7	26.9	27	27	11.5	26	—
Thermal Conductivity	btu/ft-hr 0F W/m k	60.5 104.7	65.3 113.0	62.9 108.9	65.3 113.0	66.3 114.7	72.5 125.5	61.2 106	55.6 96.2	77.5	41.8 72.3	67 115	— 46.7
Coef. of Thermal Expansion	1/0F x 106 1/0C x 106	15.4 27.7	15.2 27.4	15.2 27.4	15.2 27.4	12.9 23.3	14.4 26.0	13.3 24	11.8 21.2	10.0	14 25.2	11.4	12.2
Key Chart: Complies with ASTM Specifications B86 - 1 10mm unnotched Charpy - 2 1/4 in unnotched Charpy - 3 at 1/2% elong. 4- Izod - 5 notched Charpy - 6 compressive strength * Complies with ASTM specification B669 - 7 at 10% permanent set - N/A not available - 8 minimum Thread- Rite Screw Products and DYNACAST have endeavoured to ensure that the information contained on this page is accurate and reliable: however since conditions of use are beyond our control, no warranty is expressed or implied.

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