Hastelloy G-30 alloy,G-30 alloy,1

### Technical Datasheet: Hastelloy® G-30® (UNS N06030) Nickel Alloy **Classification:** Nickel-Chromium-Iron-Molybdenum-Copper Alloy **Common Names:** Hastelloy G-30, Alloy G-30, UNS N06030 --- #### 1.0 Introduction **Hastelloy® G-30®** is a nickel-chromium-iron-molybdenum-copper alloy specifically developed to provide exceptional corrosion resistance in a wide range of aggressive chemical environments, particularly in phosphoric acid and other complex acidic media. The alloy exhibits **superior resistance to commercial phosphoric acids** and demonstrates excellent performance in sulfuric and nitric acids, mixed acid environments, and acidic chloride-containing solutions. Its optimized chemical composition delivers outstanding pitting and crevice corrosion resistance while maintaining good fabrication characteristics. --- #### 2.0 Chemical Composition (Weight %) | Element | Minimum | Maximum | Typical Value | Key Function | |---------|---------|---------|---------------|--------------| | **Nickel (Ni)** | Balance | Balance | 43.0 | Corrosion-resistant matrix | | **Chromium (Cr)** | 28.0 | 31.5 | 29.5 | Oxidizing media resistance | | **Iron (Fe)** | 13.0 | 17.0 | 15.0 | Matrix element | | **Molybdenum (Mo)** | 4.0 | 6.0 | 5.0 | Reducing media & pitting resistance | | **Tungsten (W)** | 1.5 | 4.0 | 2.5 | Pitting resistance enhancement | | **Cobalt (Co)** | - | 5.0 | 2.0 | - | | **Copper (Cu)** | 1.0 | 2.4 | 1.7 | Sulfuric acid resistance | | **Manganese (Mn)** | - | 1.5 | 1.0 | - | | **Silicon (Si)** | - | 0.80 | 0.40 | - | | **Carbon (C)** | - | 0.03 | 0.01 | - | | **Vanadium (V)** | - | 0.30 | 0.10 | - | | **Phosphorus (P)** | - | 0.04 | 0.02 | - | --- #### 3.0 Physical Properties | Property | Value | Condition | |----------|-------|-----------| | **Density** | 8.22 g/cm³ (0.297 lb/in³) | At room temperature | | **Melting Range** | 1330-1380°C (2425-2515°F) | - | | **Thermal Expansion Coefficient** | 13.9 μm/m·°C | 20-100°C | | **Thermal Conductivity** | 10.1 W/m·K | At 100°C | | **Electrical Resistivity** | 112 μΩ·cm | At room temperature | | **Modulus of Elasticity** | 200 GPa (29.0×10⁶ psi) | At room temperature | | **Magnetic Permeability** | <1.005 | Annealed condition | --- #### 4.0 Mechanical Properties (Typical for Annealed Condition) | Property | Room Temperature | Elevated Temperature (400°C/750°F) | |----------|------------------|-----------------------------------| | **Tensile Strength** | 690 MPa (100 ksi) | 550 MPa (80 ksi) | | **Yield Strength (0.2% Offset)** | 310 MPa (45 ksi) | 240 MPa (35 ksi) | | **Elongation** | 45% | 40% | | **Reduction of Area** | 55% | 50% | --- #### 5.0 Corrosion Resistance & Applications **5.1 Key Corrosion Resistance Features:** - **Excellent resistance to commercial phosphoric acids**, including those containing halide impurities - Outstanding performance in sulfuric acid across various concentrations and temperatures - Good resistance to nitric acid and mixed acid environments - Superior pitting and crevice corrosion resistance in chloride-containing solutions - Excellent resistance to stress corrosion cracking **5.2 Primary Applications:** - **Phosphoric Acid Production:** Evaporators, heat exchangers, reaction vessels, piping systems - **Chemical Processing:** Pickling tanks, acid recovery systems, mixing vessels - **Pollution Control:** Flue gas desulfurization systems, scrubbers, ductwork - **Nuclear Fuel Reprocessing:** Equipment handling nitric and mixed acid solutions - **Metal Treatment:** Pickling lines, acid storage and handling equipment --- #### 6.0 Fabrication & Welding **6.1 Fabrication Characteristics:** - Good hot and cold workability using standard fabrication methods - Can be forged, hot worked, and cold formed - Annealing temperature: 1150-1200°C (2100-2200°F) followed by rapid cooling - Good machinability using techniques for austenitic stainless steels **6.2 Welding Recommendations:** - Welding processes: GTAW, GMAW, SMAW - Matching filler metal: AWS A5.14 ERNiCrMo-11 - Post-weld heat treatment generally not required - Maintain interpass temperature below 150°C (300°F) --- #### 7.0 International Standards & Specifications **ASME/ASTM Material Specifications:** | Product Form | ASME/ASTM Standard | Description | |--------------|---------------------|-------------| | **Plate, Sheet, Strip** | ASME SB582 / ASTM B582 | Nickel-Chromium-Iron-Molybdenum-Copper Alloy | | **Bar & Wire** | ASME SB581 / ASTM B581 | Nickel-Chromium-Iron-Molybdenum-Copper Alloy Rod & Bar | | **Seamless Tube & Pipe** | ASME SB622 / ASTM B622 | Seamless Nickel-Alloy Pipe & Tube | | **Welded Tube** | ASME SB619 / ASTM B619 | Welded Nickel-Alloy Pipe & Tube | | **Welded Pipe** | ASME SB626 / ASTM B626 | Welded Nickel-Alloy Pipe | | **Fittings** | ASME SB366 / ASTM B366 | Wrought Nickel-Alloy Fittings | **Additional International Standards:** - **UNS:** N06030 - **DIN:** 2.4603 - **EN:** NiCr30FeMo (Number pending) - **ISO:** NW 6008 --- #### 8.0 Heat Treatment **Solution Annealing:** - Temperature: 1150-1200°C (2100-2200°F) - Holding time: Appropriate to section size - Cooling: Rapid cooling (water quench or fast air cool) - Purpose: To dissolve secondary phases and restore corrosion resistance --- **Note:** Hastelloy® and G-30® are registered trademarks of Haynes International, Inc. The information provided represents typical properties and characteristics. For specific applications, consult the manufacturer's latest technical data and perform appropriate testing under actual service conditions. The alloy's exceptional performance in phosphoric acid environments makes it particularly valuable in fertilizer production and related chemical processing industries.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3280 gallon liquid totes Special package is available on request.