CERTIFICATIONS
Extreme strength wrought Cupro Nickel alloy CuNi14Al2 (compliant with generic alloy DIN 2.1504).
Highest strength and hardness within our marine suite of alloys, with tensile strengths over 1000MPa possible.
Background
This extremely high strength wrought cupro nickel is used in a variety of marine applications - including the oil, gas and defence sectors - for its outstanding corrosion resistance combined with extreme strength and hardness. The CAL T-1000 is also highly resistant to wear, has a low magnetic permeability, resists galling against stainless steel and does not suffer from marine growth (bio-fouling) or hydrogen embrittlement.
The main strengthening mechanism involves the precipitation of an extremely fine nickel-aluminium Ni3Al phase. Our deep metallurgical understanding of this mechanism and our advanced manufacturing techniques allows us to induce industry-leading properties which are unavailable elsewhere.
This material is available in two strength versions; T-1000S (table 2A standard material) and T-1000E (table 2B enhanced version). The enhanced versions, T-1000E, is only available in bars (square/flat/round/shapes) to around 100mm ø.
T-1000E is amongst the strongest copper-based alloys available anywhere.
Mechanical Properties
T-1000S (Standard)
Exceeds the requirements of DIN 2.1504
Extreme Strength Copper-Nickel-Aluminium Alloy
CuNi14Al2Table 2A - Guaranteed Minimum Mechanical Properties
| Product → |
Bars - Round, square, flats, hexagon, shapes Forgings - discs, blocks, shafts, rings, tubes |
|||
|---|---|---|---|---|
| Material section-size (minor dimension) | ||||
| Property ↓ |
Below 25mm | Over 25mm to 50mm | Over 50mm to 80mm | Over 80mm |
| Ultimate Tensile Strength Rm MPa | 900 (131Ksi) |
880 (128Ksi) |
850 (123Ksi) |
820 (119Ksi) |
| 0.2% Proof Stress Rp0.2 MPa | 750 (109Ksi) |
720 (104Ksi) |
700 (102Ksi) |
600 (87Ksi) |
| % Elongation after Fracture 5.65 √ So % | 10 | 10 | 10 | 10 |
| Hardness Brinell HB 10/3000 | 260 | 255 | 255 | 240 |
| *Typical Impact J | 10-16 (7-12ft lbf) |
10-16 (7-12ft lbf) |
10-16 (7-12ft lbf) |
10-16 (7-12ft lbf) |
Mechanical Properties
T-1000E (Enhanced)
Exceeds the requirements of DIN 2.1504
Extreme Strength Copper-Nickel-Aluminium Alloy
CuNi14Al2Table 2A - Guaranteed Minimum Mechanical Properties
| Product → |
Bars - Round, square, flats, hexagon, shapes Forgings - discs, blocks, shafts, rings, tubes |
|
|---|---|---|
| Material section-size (minor dimension) | ||
| Property ↓ |
Below 40mm | Over 40mm to 70mm |
| Ultimate Tensile Strength Rm MPa | 1000 (145Ksi) |
940 (136Ksi) |
| 0.2% Proof Stress Rp0.2 MPa | 940 (136Ksi) |
920 (133Ksi) |
| % Elongation after Fracture 5.65 √ So % | 7 | 5 |
| Hardness Brinell HB 10/3000 | 280 | 270 |
| *Typical Impact J | 5-15 (4-11ft lbf) |
5-15 (4-11ft lbf) |
Corrosion Data
A tenacious oxide film at the surface - which progressively thickens over time offering increased protection - makes this material highly resistant to attack in atmospheric and sea water environments, including polluted and brackish water.
The material is highly resistant to pitting and crevice corrosion which is common in multi-phase alloys and stainless steels. It has a natural bio-fouling resistance to attachment by micro/macrofoulers (e.g. seagrasses and molluscs) living in the seawater, which cause accelerated corrosion and reduced functionality.
Table 3 - Surface Corrosion Data - Seawater
| CAL Elite Marine Alloys | Other commonly used Marine-Alloys (also offered by CAL) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | Extreme Strength Cupro Nickel | High Strength Copper-Nickel-Manganese-Aluminium Alloy | Wrought Copper-Nickel-Chrome (CNC) Alloy | Wrought Nickel Aluminium Bronze (NAB) | 70/30 Cupro Nickel | 90/10 Cupro Nickel | Naval Brass | Nickel-Copper Alloy | Nickel-Copper-Aluminium-Titanium Alloy | Stainless Steel | Stainless Steel |
| Base composition | CuAl14Al2 | CuNi15Mn4 Al1Fe |
CuNi30Cr1 MnFeSiZrTi |
CuAl9Ni5 Fe4 |
CuNi30Mn1 Fe |
CuNi30Mn1 Fe |
CuZn37Sn1 | NiCu30Fe2 Mn1 |
NiCu30Al3 Fe1MnTi |
FeCr18Ni9 | FeCr18Ni12 Mo2 |
| Specification → Property ↓ |
(DIN 2.1504) |
(Def Stan 02-835) |
(Def Stan 02-824) | Def Stan (NES) 833 / CW307G | Def Stan (NES) 780 / CN107 / C71500 / CW354H | Def Stan (NES) 779 / CN102 / C70600 / CW352H | CZ112 / CW712R / C46400 | NA13 / UNS N04400 | NA18 / UNS N05500 | 304 stainless | 316 stainless |
| General corrosion rate mm/year | 0.02mm / 0.0008" | 0.025mm / 0.001" | 0.02mm / 0.0008" | 0.025-0.05mm / 0.001-0.002" | 0.03mm / 0.001" | 0.03mm / 0.001" | 0.05mm / 0.002" (4 x at 60℃) | 0.03mm / 0.001" | 0.03mm / 0.001" | 0.025mm / 0.001" | 0.025mm / 0.001" |
| Crevice corrosion rate mm/year | <0.02mm / 0.0008" | <0.025mm / 0.001" | <0.02mm / 0.0008" | 0.5-1.0mm / 0.002-0.004" |
0.025-0.13mm / 0.001-0.005" | 0.025-0.13mm / 0.001-0.005" | 0.15mm / 0.006" | 0.5mm / 0.020" | 0.05mm / 0.002" | 0.25mm / 0.010" | >0.13mm / 0.005" |
| Selective Phase Corrosion mm/year | None | None | None | 0.5-1.0mm / 0.002-0.004" |
None | None | Yes 0.15mm / 0.006" | None | None | None | None |
| Impingement resistance limit m/second | 3.7 (12ft/sec.) | 3.7 (12ft/sec.) | 6-8 (20-26ft/sec.) | 4.3 (14ft/sec.) | 4.6 (15ft/sec.) | 3.7 (12ft/sec.) | 3.05 (10ft/sec.) | >9.1 (>30ft/sec.) | >9.1 (>30ft/sec.) | >9.1 (>30ft/sec.) | >9.1 (>30ft/sec.) |
| Corrosion Potential in Seawater Vsce | -0.18 | -0.19 | -0.18 | -0.19 | -0.18 | -0.20 | -0.24 | -0.12 | -0.12 | -0.08 | -0.08 |
| Marine bio-fouling resistance | Highly resistant | Highly resistant | Highly resistant | Partially resistant | Resistant | Highly resistant | Partially resistant | Not resistant | Not resistant | Not resistant | Not resistant |
| Cast Def Stan 02-747 | |
|---|---|
| General corrosion rate | 0.07mm (0.002") / year |
| Crevice corrosion rate | 0.05mm (0.002") / year |
| Selective Phase Corrosion | 1.1mm (0.04") / year typical 1.4mm (0.055") / year observed |
Table 4 - Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Melting point | 1,070-1,120°C | 1,958-2,048°F |
| Density | 8,500 kg/m³ | 0.3070 lbs/in³ |
| Specific Heat | 0.416 J/(g.°K) | 0.0993 Btu/(lb.°F) |
| Thermal Conductivity @ 20°C | 71.2 W/(m.°K) | 41.1 Btu/(Hour.Ft.°F) |
| Electrical Conductivity %IACS at 20°C | 11 | 11 |
| Electrical Resistivity at 20°C | 0.17 μ.Ω.m | 6.7 μ.Ω.in |
| Magnetic Permeability (μr) | ||
| Coefficient of linear expansion (20-100°C) | 16.0 x 10-6/°C | 8.89 x 10-6/°F |
| Coefficient of linear expansion (20-200°C) | 12.0 x 10-6/°C | 6.67 x 10-6/°F |
| Coefficient of static friction against mild steel | 0.22 | 0.22 |
| Young's Modulus, Modulus of Elasticity | 143,000 N/mm² | 20,740 ksi |
| Compressive Strength σdB | 2,350 N/mm² | 340.8 ksi |
| Poisson's Ratio | 0.33 | 0.33 |
| Torsional Modulus 25mm dia. bar | 53 x 10³ N/mm² | 7,687 ksi |
| Fatigue reversed bending σbw 20 x 106 | 190 N/mm² | 27.56 ksi |
United Kingdom