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HIDURAX 7

HIDURAX^® 7

HIDURAX 7 is an aluminium-silicon bronze possessing good mechanical strength and hardness, and advantageous ductility, corrosion resistance (particularly to de-aluminification) and wear resistance. Also of benefit are HIDURAX 7’s superior bearing properties, low magnetic permeability, good impact strength and ease of weldability.

HIDURAX^® 7 Technical Information

HIDURAX 7 Bar stock sizes available
Diameter (in)	Diameter (mm)	kg per m

Specifications of Hidurax 7

DEF STAN 02-834
NES 834 Part 2
DGS 8453A
DGS 1044

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+ Hidurax 7 Features

+ Applications of Hidurax 7

+ Forms of HIDURAX 7 Available

+ Chemical Specification of Hidurax 7

+ Physical Properties of Hidurax 7

+ Basic Properties of Hidurax 7- Mechanical Properties

+ Machining Advice of Hidurax 7

+ Alloy Comparisons

Disclaimer
Data in this Hidurax 7 page is provided solely for the purposes of distribution of information. Langley Alloys cannot make guarantees with respect to subject matter or accuracy of this information. Langley Alloys specifically disclaims all guarantees, expressed, implied or otherwise, including without limitation, all warranties of merchantability and fitness for a particular purpose. This publication may include technical inaccuracies or typographical errors. If errors are found, please make a notification via e-mail to: info@langleyalloys.com

Elements	Al	Cu	Fe	Mg	Mn	Ni	Pb	Si	Sn	Zn	Total Impurities
Minimum	6.0	REMAINDER	0.5					2.0
Maximum	6.4		0.7	0.05	0.5	0.1	0.01	2.4	0.1	0.4	0.50

Density (Kg.m^-3)	7800
Magnetic Permeability	1.05
Young’s Modulus (N/mm²)	128 x 10³
Electrical conductivity, 20°C	8-9% IACS
Electrical resistivity, 20°C (µ.O.m)	0.22
Specific Heat (J.Kg^-1.°K^-1)	419
Thermal conductivity, 20°C (W.m^-1.°K^-1)	425
Mean coefficient of thermal expansion, 20-300°C (°K^-1)	18.0 x 10^-6

0.2% Proof Stress (N/mm² )[ksi] minimum	245-310 [35.5-50]
Ultimate Tensile Strength (N/mm²) [ksi] minimum	540-620 [78.3-90]
Elongation (%) minimum	20-35
Hardness (HBN)	130-180
Impact (J)[ft lb]	34-54 [25-40]

Operation	Cutting Speed m/min (ft/min)	Feed Rate mm/rev (in/rev)	Depth of cut mm (in)
Milling	30-60 [100-200]	0.25 mm/tooth 0.010 in/tooth	3.0-6.0 (0.10-0.25)
Drilling	15-40 [50-130]	0.075-0.5 [0.003-0.02]
Turning - Roughing	30-60 [100-200]	0.25 mm/rev 0.010 in/rev	3.0-6.0 (0.10-0.25)
Turning - Finishing	120-180 [400-600]	0.12 [0.005]	0.12-0.25 (0.005-0.010)
Tips	Carbide tipped using water-soluble lubricant

Alloy Comparisons	HIDURAX 7	HIDURAX 1	BS 970 070M55 Medium Carbon Steel	316 Stainless Steel
Strength (0.2% Proof Stress, N/mm²), minumum	235	400	355	205
UTS	525	700	700	515
Cavitation erosion rate (mm³/h) in fresh water	0.6	0.6	>4	1.7
Electrical Conductivity (%IACS)	8.5	8	8.5	3
Magnetic Permeability	1.05	1.50	Ferromagnetic	1.05

HIDURAX® 7

HIDURAX® 7 Technical Information

HIDURAX^® 7

HIDURAX^® 7 Technical Information