| |
| Basic
Properties - Mechanical Properties |
| Ruling Sections up to 125mm |
| 0.2% Proof
Stress (N/mm2 )[ksi] minimum |
430 [62.3] |
| Ultimate Tensile Strength
(N/mm2) [ksi] minimum |
725 [105] |
| Elongation (%) minimum |
18 |
| Hardness (HBN) |
210-277 |
| Izod Impact Energy (J) [ft.lb] |
40 [29.5] |
|
| Ruling Sections above 125mm |
| 0.2% Proof
Stress (N/mm2 )[ksi] minimum |
410 [59.5] |
| Ultimate Tensile Strength
(N/mm2) [ksi] minimum |
710 [103] |
| Elongation (%) minimum |
18 |
| Hardness (HBN) |
210-277 |
| Charpy V-notch Impact at -46°C (J) [ft.lb] |
27 [20] |
| Ultrasonic Testing |
100% examination (including end-to-end)
to ASTM A388 by compression wave and shear wave (longitudinal
and circumferential). FBH dimensions 1.5mm (sections <50mm),
2.5mm (sections 50mm to 100mm) and 3.0mm (sections above
100mm. |
| |
|
 |
Excellent corrosion resistance in marine environments
- superior to nickel aluminium bronzes and 22% chrome duplex
stainless steels |
| |
|
|
Superior strength, jet impingement resistance and
general corrosion resistance compared to conventional copper
nickels |
| |
|
|
Greater strength and toughness than nickel aluminium
bronzes - strength is comparable to 22% chrome duplex stainless
steels |
| |
|
|
No loss of impact strength down to -196°C |
| |
|
|
Excellent anti-galling properties, particularly
when operating against stainless steels |
| |
|
|
Good anti-fouling properties |
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|
|
Freedom from hydrogen embrittlement |
| |
|
|
Low magnetic permeability |
| |
|
|
Approved as a named alloy by the world’s most
prestigious Navies |
| |
|
|
Galvanic compatability with other copper alloys
and stainless steels |
| Ele. |
Al |
C |
Cr |
Cu |
Fe |
Mg |
Mn |
Nb |
Ni |
P |
Pb |
S |
Si |
SN |
Zn |
Tot. Imp. |
| Min |
1 |
|
|
REM. |
0.7 |
|
3.5 |
0.5 |
13.5 |
|
|
|
|
|
|
|
| Max |
2 |
0.05 |
0.5 |
|
1.2 |
0.05 |
5.5 |
1.0 |
20.0 |
0.01 |
0.02 |
0.15 |
0.15 |
0.1 |
0.2 |
0.3 |
| Density (Kg.m-1) |
8530 |
| Magnetic Permeability |
<1.01 |
| Young’s Modulus (N/mm2) |
148 x 103 |
| Modulus of Rigidity (N/mm2) |
52 x 103 |
| Specific Heat, 20°C (J.Kg-1.°K-1) |
435 |
| Electrical conductivity, 20°C (m.Ω-1.mm-2) |
2.85 |
| Thermal conductivity, 20°C (W.m-1.°K-1) |
25 |
| Mean coefficient of thermal expansion, 20-300°C (°K-1) |
16.0 x 10-6 |
| |
|
|
MSA-MDS-19A/20A-BAR |
| |
|
|
DEF STAN 02: 835 |
| |
|
|
DGS 357 |
| |
|
|
DOD-C-24676 |
| |
|
|
EB 4223A |
| |
| Defence Applications: |
| Bolting for ships and submarines, Control elements of submarines,
Pump shafts, Mechanical seals, Winch components, Gears, Hose
couplings, Weapons handling equipment, Components in sonar
devices, Propeller shafts, Drive bushes |
| |
 |
| |
| Oil and Gas Industry: |
| Subsea bolting, Shafts for pumps & valves, Valve spindles,
Hydraulic pistons & cylinders |
| |
|
| |
| Chemical Industry: |
| Impellers, pump shafts, valve components, process control
equipment |
| |
|
| |
| Subsea Mining: |
| Hydraulic connectors, pistons and cylinders, pressure couplings |
| Operation |
Cutting Speed m/min
(ft/min) |
Feed Rate
mm/rev
(in/rev) |
Depth of cut mm
(in) |
| Milling |
45-60 [150-200] |
0.05-0.13 mm/tooth
0.02-0.005 in/tooth |
0.5-6.0
(0.02-0.25) |
| Drilling |
25-75 [80-250] |
0.075-0.5 [0.003-0.02] |
|
| Turning - Roughing |
120-180 [400-600] |
0.4-0.75 [0.01-0.03] |
3 (0.125) |
| Turning - Finishing |
150-300 [500-1000] |
0.15-0.4 [0.006-0.015] |
0.5 (0.02) |
| Tips |
Carbide tipped using water-soluble
lubricant |
| Alloy Comparisons |
Nickel-Aluminium
Bronze |
Aluminium-SiliconBronze |
70/30
Copper-Nickel |
HIDURON
191 |
| Strength (0.2% Proof Stress, N/mm2), minimum |
247 |
220 |
115 |
430 |
| Impact Energy (J), minimum |
23 |
33 |
54 |
40 |
| Corrosion Resistance in seawater (mm/yr) |
0.075 |
0.06 |
0.025 |
0.02 |
| Anti-Galling Properties |
Inferior |
Inferior |
Poor |
Good |
|
| Back
to Top |
| |
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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