HIDUREL^® 5

ALLOY TYPE	HIDUREL^®
ALLOY NAME	HIDUREL^® 5

Basic Properties - Mechanical Properties

BS B25
0.2% Proof Stress (N/mm² )[ksi] minimum	430 [62.3]
Ultimate Tensile Strength (N/mm²) [ksi] minimum	580 [84.1]
Elongation (%) minimum	18
Hardness (HBN)	159-207

DTD 498
0.1% Proof Stress (N/mm² )[ksi] minimum	417 [60.4]
Ultimate Tensile Strength (N/mm²) [ksi] minimum	587 [85.1]
Elongation (%) minimum	15
Hardness (HBN)	159-207

DTD 504 (Cold Drawn)
0.1% Proof Stress (N/mm² )[ksi] minimum	572 [82.9]
Ultimate Tensile Strength (N/mm²) [ksi] minimum	649 [94.1]
Elongation (%) minimum	10
Hardness (HBN)	174-210

Additional Testing (optional)

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Magnetic Permeability	<1.001
Electrical Conductivity	<38% IACS

Alloy Features

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	High Strength

	Combination of high strength with good electrical and thermal conductivity

	Excellent bearing and anti-friction properties, particularly when operated against hardened steel

	Excellent corrosion resistance in marine environments

	Very low magnetic permeability - less than 1.001

	No loss of impact strength down to -196°C

	Spark resistance

	Good elevated temperature properties

	Ease of machining

	Good marine fouling resistance

Chemical Specification

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Elements	Al	Cu	Fe	Ni	Si	Total Impurities
Minimum		REMAINDER		2.0	0.4
Maximum	0.02		0.01	3.5	0.8	0.30

Physical Properties

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Density (Kg.m^-1)	8870
Magnetic Permeability	<1.001
Young’s Modulus (N/mm²)	284 x 10³
Modulus of Rigidity (N/mm²)	106 x 10³
Poisson’s Ratio	0.39
Specific Heat, 20°C (J.Kg^-1.°K^-1)	419
Electrical conductivity, 20°C (m.Ω^-1.mm^-2)	2.85
Thermal conductivity, 20°C (W.m^-1.°K^-1)	190
Thermal conductivity, 200°C (W.m^-1.°K^-1)	211
Thermal conductivity, 400°C (W.m^-1.°K^-1)	232
Electrical resistivity, 20°C (µ.Ω.m)	0.043
Electrical conductivity at 20°C	40% IACS
Mean coefficient of thermal expansion, 20-400°C (°K^-1)	16.0 x 10^-6
Coefficient of static friction against mild steel	0.45-0.5
Coefficient of dynamic friction against mild steel	0.26 (dry), 0.33 (wet)

Specifications

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	MSA-MDS-4FA-BAR

	BS B25 1991

	DTD 498

	DTD 504

	BS 4577A Type 3/2

Applications

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Aerospace:

Aero engine bearing cages, Aircraft undercarriage components, Heavily loaded bearings, Motor shafts in helicopters, Components in head-up display units, Electrical connectors

Defence Applications:

Bolting for ships and submarines, Mine detection equipment, Flanges, Swash plate pump components

Automotive:

Valve guides & seats, Small end bushes, Camshaft bushes, Brake caliper pads, Fuel pump components

Manufacturing Industry:

Resistance welding electrodes, Plastic moulding dies, Electrical forging dies, Die grips on upsetting machines

Hydraulic & Mechanical Engineering:

Valve bodies, Slipper pads, Thrust pads, Gears, Piston crowns, Mechanical seals, Clutch plates in marine engines, Bushes in subsea valves, Electrical contacts, Hose connectors

Machining Advice

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Operation	Cutting Speed m/min (ft/min)	Feed Rate mm/rev (in/rev)	Depth of cut mm (in)
Drilling	15-40 [50-130]	0.075-0.5 [0.003-0.02]
Turning - Roughing	30-60 [100-200]	0.25 [0.01]	2 (0.08)
Turning - Finishing	120-180 [400-600]	0.12 [0.005]	0.3 (0.01)
Tips	Carbide tipped using water-soluble lubricant A chip breaker may be found necessary for efficient operation

Alloy Comparisons	Nickel-Aluminium Bronze	Aluminium-Silicon Bronze	70/30 Copper-Nickel	HIDUREL 5
Strength (0.2% Proof Stress, N/mm²) minimum	247	220	115	430
Impact Energy (J)	23	33	54	27
Electrical Conductivity (%IACS)	8	9	5	40
Bearing Properties	Inferior	Inferior	Poor	Good

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HIDUREL® 5

HIDUREL^® 5