ASTM CD-4MCu vs UNS S32003
| Property | ASTM CD-4MCu (J93370 · Cast) | UNS S32003 (AL 2003) |
| COMPOSITION (%) | ||
| Cr (chromium) | 24.5 – 26.5 | 19.5 – 22.5 |
| Ni (nickel) | 4.75 – 6 | 3 – 4 |
| Mo (molybdenum) | 1.75 – 2.25 | 1.5 – 2 |
| N (nitrogen) | — | 0.14 – 0.2 |
| Cu (copper) | 2.75 – 3.25 | — |
| Mn (manganese) | 0 – 1 | 0 – 2 |
| W (tungsten) | — | — |
| PHYSICAL | ||
| Density (g/cm3) | 7.7 – 7.8 | 7.69 – 7.76 |
| MECHANICAL | ||
| Young’s Modulus (GPa) | 195 – 205 | 190 – 210 |
| Yield Strength (MPa) | 505 – 620 | 515 – 550 |
| Tensile Strength (MPa) | 670 – 820 | 725 – 760 |
| Elongation (% strain) | 30 – 40 | 31.5 – 36.5 |
| Hardness – Brinell (HB) | 228 – 258 | 218 – 228 |
| Hardness – Rockwell C | 21 – 26 | 19 – 21 |
| Fatigue Strength @ 10^7 (MPa) | 323 – 373 | 330 – 380 |
| Fracture Toughness (MPa*m^0.5) | 51 – 112 | 150 – 195 |
| THERMAL | ||
| Melting Point (C) | 1460 – 1500 | 1400 – 1450 |
| Max Service Temp (C) | 746 – 770 | 335 – 365 |
| Min Service Temp (C) | -23 – -3 | -60 – -50 |
| Thermal Conductivity (W/m*C) | 15 – 16 | 16.3 – 17.7 |
| CORROSION RESISTANCE | ||
| PREN | 30.3 – 33.9 | 26.7 – 32.3 |
| Pitting & Crevice Corrosion | High (30-40) | High (30-40) |
| Stress Corrosion Cracking | Susceptible | Susceptible |
| Sea Water | — | Good |
| Sour Oil & Gas | — | Good |
| PROCESSING | ||
| Machining Speed (m/min) | 17.4 | 18.9 |
| Weldability | Good | Good (MIG/plasma/SAW/TIG: Good) |
| Metal Casting | Limited use | Unsuitable |
| Metal Hot Forming | Unsuitable | Acceptable |
| Carbon Equivalency | 1.1 – 1.35 | 0.8 – 1.08 |
| NOTES | ||
| Generation / Notes | Must be used in solution annealed condition | — |
| Typical Uses | Chemicals industry, marine, water supply, power plant, pulp & paper manufacture, soap manufacture, textiles, transportation | — |