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| Basic
Properties - Mechanical Properties |
| Standard Grade |
| 0.1 % Proof Stress
(N/mm2 )[ksi] minimum |
216 [31.3] |
| Ultimate Tensile Strength (N/mm2)
[ksi] minimum |
360 [52.2] |
| Elongation (%) minimum |
17 |
| Hardness (HBN) |
100-125 |
| Cold Worked |
| 0.1 % Proof Stress
(N/mm2 )[ksi] minimum |
340 [49.3] |
| Ultimate Tensile Strength (N/mm2)
[ksi] minimum |
410 [59.5] |
| Elongation (%) minimum |
15 |
| Hardness (HBN) |
125-150 |
| Magnetic Permeability |
<1.001 |
| Electrical Conductivity |
<80% IACS |
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High Strength |
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Combination of high strength with high electrical
and thermal conductivity maintained to a marked degree at elevated
temperatures |
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Outstanding bearing properties |
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Suitable for vacuum brazing |
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Excellent corrosion resistance in marine environments. |
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Very low magnetic permeability - less than 1.001 |
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Excellent bearing and anti-friction properties,
particularly when operated against hardened steel |
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No loss of impact strength down to -196°C |
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Easy to silver plate, solder and braze |
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Spark resistance |
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Good elevated temperature properties |
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Ease of machining |
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Good marine fouling resistance |
| Elements |
Cr |
Cu |
Total Impurities |
| Minimum |
0.50 |
REMAINDER |
|
| Maximum |
1.20 |
|
0.50 |
| Density (Kg.m-1) |
8930 |
| Magnetic Permeability |
<1.001 |
| Young’s Modulus (N/mm2) |
126 x 103 |
| Modulus of Rigidity (N/mm2) |
42 x 103 |
| Impact Strength (J) |
55-80 |
| Specific Heat, 20°C (J.Kg-1.°K-1) |
375 |
| Electrical resistivity, 20°C (µΩ.m) |
2.16 maximum |
| Thermal conductivity,20°C (W.m-1.°K-1) |
330 |
| Electrical conductivity at 20°C |
80% IACS |
| Mean coefficient of thermal expansion (°K-1) |
17.0 x 10-6 |
| Coefficient of static friction against mild steel |
0.18 |
| Electrode Potential (mV vs SCE) |
-180 |
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MSA-MDS-2H-BAR |
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BS 4577A Type 2/1 |
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| Electrical: |
| Mode Transformers, Switchgear components, circuit breakers,
wave guides, slip rings, marine connectors |
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 |
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| Resistance welding: |
| Spot welding electrodes, seam welding wheels |
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| Mechanical: |
| Mechanical seals, brake discs, bushes |
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| Foundry equipment: |
| Continuous casting dies, nozzles for oxygen lances and oxy-fuel
burners |
| 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
6 |
| Strength (0.2% Proof Stress, N/mm2) minimum |
247 |
220 |
115 |
216 |
| Impact Energy (J) minimum |
23 |
33 |
54 |
34 |
| Electrical Conductivity (%IACS) |
8 |
9 |
5 |
80 |
| Thermal Conductivity (W.m-1.°K-1) |
41 |
41 |
30 |
330 |
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| Back
to Top |
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Disclaimer
Data in this publication 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 |
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