IS 318 Grade 4 Bronze Casting
IS 318 Grade 4 Bronze Casting – NAB Indian Standard | Equiv C95800 | CC334G | CuAl10Ni5Fe4
IS 318 Grade 4 is the Indian Standard designation for Nickel Aluminum Bronze (NAB), the premium marine-grade aluminum bronze equivalent to C95800 and CC334G. Mandated by Indian Register of Shipping (IRS) and Indian Navy for propeller and sea service castings. Electrical Accessories India is an established supplier to Indian shipyards and DRDO with IRS certification.
Chemical Composition – IS 318 Grade 4
| Element |
Min % |
Max % |
| Cu |
Balance |
— |
| Al |
8.5 |
9.5 |
| Ni |
4.5 |
5.5 |
| Fe |
3.5 |
4.5 |
| Mn |
— |
0.5 max |
Equivalence
| Standard |
Designation |
| IS 318 |
Grade 4 |
| ASTM/UNS |
C95800 (NAB) |
| EN 1982 |
CC334G |
| ISO/DIN |
CuAl10Ni5Fe4 |
| BS 1400 |
NAB |
Properties (IS 318 Gr.4)
| Property |
Value |
| Tensile Strength |
690 MPa min |
| Yield Strength |
310 MPa min |
| Elongation |
15% min |
| Hardness |
160–210 HB |
Price: US$ 16.80/kg
US$ 16.80 per kilogram, CIF US/EU Port.
