One of the few grades in nickel iron chromium molybdenum copper alloy with a chromium content greater than 30%, due to the composite effect of its composition, it has extremely strong corrosion resistance in solutions such as H2SO4 and HNO3. The excellent sensitivity resistance of this alloy allows it to be directly applied after welding in Taijinshu chemical processing, mainly in equipment and components for wet H3PO4 production and processing, as well as HNO3+HF pickling equipment and components.
Hastelloy G30 has excellent thermal stability and resistance to sensitive intergranular corrosion due to its chromium content exceeding 30% and extremely low carbon content, as well as the addition of sufficient niobium. It has good corrosion resistance to sulfuric acid, and has better corrosion resistance to many mixed acids (such as nitric acid and hydrochloric acid) and strong oxidizing acids in other complex environments than most other nickel based or iron based alloys.
Corresponding brand:
| national standard | American Standard | din |
| NS3404 | Hastelloy G30 | 2.4603 |
| 00Cr30Ni43Mo5.5W2.5Cu2Nb | N06030 | NiCr0Fer4825hMo |
Chemical composition:
| % | C | Si | Mn | P | S | Cr | Mo | W | Fe | Cu | Nb+Ta | Co | Ni |
| Min | <0.03 | 0.8 | <1.5 | 0.004 | <0.02 | 28.5 | 4 | 1.5 | 13 | 1 | 0.3 | 5.0 | Remainder |
| Max | - | - | 31.5 | 6 | 4 | 17 | 2.4 | 1.5 |
Physical performance:
| density | melting point | Specific heat capacity | Thermal conductivity |
| 8.22g/cm3 | 1350~1370℃ | 388~619J/kg.K | 10.2~16.7 W(mK) |
Application field:
Widely used in phosphoric acid equipment, sulfuric acid equipment, nitric acid equipment, nuclear fuel reprocessing, nuclear waste treatment, acid washing operations, petrochemical products, fertilizer production, pesticide production, and gold extraction. Hastelloy G30 Hastelloy alloy has good resistance to hydrofluoric acid/nitric acid mixtures used in applications such as stainless steel pickling. Compared to other nickel or iron based alloys, Hastelloy G30 Hastelloy alloy exhibits better resistance in commercial phosphoric acid. Its application as an acid evaporator in the fertilizer industry is increasing day by day.
