Hastelloy G-30® is a high-performance, corrosion-resistant nickel-chromium-iron based alloy designed to withstand highly aggressive chemical environments. Developed as an improvement over its predecessor, Hastelloy G-3®, G-30® offers superior resistance to strong oxidizing acids, particularly nitric, sulfuric, and phosphoric acids. It is widely used in industries such as chemical processing, fertilizer production, and power plants where exposure to harsh corrosive media is a constant challenge.
Fasteners made from Hastelloy G-30® provide exceptional durability and reliability in extreme environments, ensuring secure connections in critical applications. These fasteners—including bolts, nuts, washers, and screws—offer outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking, making them ideal for use in chemical reactors, heat exchangers, and piping systems. Their superior mechanical properties and longevity reduce maintenance costs and downtime, enhancing operational efficiency. Whether for new construction or equipment upgrades, Hastelloy G-30® fasteners deliver unmatched performance in the most demanding conditions.
Nickel Systems stocks the Hastelloy G-30® fasteners needed for your next project. Get more information below▼ including specifications and more material details or request a quote today.
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If your question isn’t answered below, download the complete technical data sheet here or keep scrolling ▼ to get more general information about Hastelloy G-30® material.
| Physical Property | Imperial Units | Metric Units | ||
| Density | RT | 0.297 lb/in3 | RT | 8.22 g/cm3 |
| Electrical Resistivity | RT | 45.7 μ0hm.in | RT | 1.16 μ0hm.m |
| 200°F | 46.0 μ0hm.in | 100°C | 1.17 μ0hm.m | |
| 400°F | 46.9 μ0hm.in | 200°C | 1.19 μ0hm.m | |
| 600°F | 47.8 μ0hm.in | 300°C | 1.21 μ0hm.m | |
| 800°F | 48.5 μ0hm.in | 400°C | 1.23 μ0hm.m | |
| 1000°F | 49.0 μ0hm.in | 500°C | 1.24 μ0hm.m | |
| — | — | 600°C | 1.25 μ0hm.m | |
| Thermal Conductivity | RT | 69 btu.in/h.ft2.°F | RT | 10 W/m.°C |
| 200°F | 81 btu.in/h.ft2.°F | 100°C | 12 W/m.°C | |
| 400°F | 98 btu.in/h.ft2.°F | 200°C | 14 W/m.°C | |
| 600°F | 120 btu.in/h.ft2.°F | 300°C | 17 W/m.°C | |
| 800°F | 134 btu.in/h.ft2.°F | 400°C | 19 W/m.°C | |
| 1000°F | 141 btu.in/h.ft2.°F | 500°C | 20 W/m.°C | |
| — | — | 600°C | 21 W/m.°C | |
| Mean Coefficient of Thermal Expansion | 86-200°F | 7.1 μin/in. °F | 30-100°C | 12.8 μm/m.°C |
| 86-400°F | 7.7 μin/in. °F | 30-200°C | 13.8 μm/m.°C | |
| 86-600°F | 8.0 μin/in. °F | 30-300°C | 14.3 μm/m.°C | |
| 86-800°F | 8.3 μin/in. °F | 30-400°C | 14.8 μm/m.°C | |
| 86-1000°F | 8.6 μin/in. °F | 30-500°C | 15.3 μm/m.°C | |
| 86-1200°F | 8.9 μin/in. °F | 30-600°C | 15.8 μm/m.°C | |
| Dynamic Modulus of Elasticity | RT | 29.3 x 106 psi | RT | 202 GPa |
| 400°F | 28.4 x 106 psi | 200°C | 196 GPa | |
| 600°F | 28.2 x 106 psi | 300°C | 195 GPa | |
| 800°F | 27.8 x 106 psi | 400°C | 192 GPa | |
| 1000°F | 26.7 x 106 psi | 500°C | 187 GPa | |
RT = Room Temperature
| Form | Thickness/ Bar Diameter | Test Temperature | 0.2% Offset Yield Strength | Ultimate Tensile Strength | Elongation | ||||
| in. | mm. | °F | °C | ksi | MPa | ksi | MPa | % | |
| Sheet | 0.028 | 0.71 | RT | RT | 47 | 324 | 100 | 689 | 56 |
| Sheet | 0.125 | 3.20 | RT | RT | 51 | 352 | 100 | 689 | 56 |
| Plate | 0.250 | 6.40 | RT | RT | 46 | 317 | 98 | 676 | 55 |
| Plate | 0.375 | 9.50 | RT | RT | 45 | 310 | 100 | 689 | 65 |
| Plate | 0.500 | 12.70 | RT | RT | 46 | 317 | 100 | 689 | 64 |
| Plate | 0.750 | 19.10 | RT | RT | 47 | 324 | 98 | 676 | 65 |
| Plate | 1.250 | 31.80 | RT | RT | 45 | 310 | 99 | 683 | 60 |
| Bar | 1 | 25.40 | RT | RT | 46 | 317 | 100 | 689 | 60 |
| Plate & Bar* | Various | 200 | 93 | 42 | 290 | 95 | 655 | 54 | |
| Plate & Bar* | Various | 400 | 204 | 36 | 248 | 88 | 607 | 59 | |
| Plate & Bar* | Various | 600 | 316 | 33 | 228 | 83 | 572 | 59 | |
| Plate & Bar* | Various | 800 | 427 | 31 | 214 | 80 | 552 | 60 | |
| Plate & Bar* | Various | 1000 | 538 | 29 | 200 | 76 | 524 | 62 | |
*Average results from tests of 11 plate and bar products of thickness/diameter 6.4 to 31.8 mm
RT= Room Temperature
| Test Temperature | Impact Strength | ||
| °F | °C | ft-lbf | J |
| RT | RT | 326 | 442 |
| -320 | -196 | 389 | 527 |
Impact strengths were generated using Charpy V-notch samples, machined from mill annealed plate.
| Form | Hardness, HRBW | Typical ASTM Grain Size |
| Sheet | 81 | 1.5 – 4 |
| Plate | 80 | 0 – 3 |
| Bar | 78 | 0 – 2 |
All samples tested in solution-annealed condition.
HRBW = Hardness Rockwell “B”, Tungsten Indentor.
| Conc. Wt. % | 50°F | 75°F | 100°F | 125°F | 150°F | 175°F | 200°F | 225°F | Boiling |
| 10°C | 24°C | 38°C | 52°C | 66°C | 79°C | 93°C | 107°C | ||
| 1 | — | — | — | — | <0.01 | <0.01 | <0.01 | — | 0.01 |
| 1.5 | — | — | — | — | — | — | — | — | — |
| 2 | — | — | — | <0.01 | <0.01 | — | — | — | 9.47 |
| 2.5 | — | — | — | <0.01 | 1.04 | 2.06 | 4.23 | — | 12.67 |
| 3 | — | — | <0.01 | <0.01 | — | — | — | — | — |
| 3.5 | — | — | — | — | — | — | — | — | — |
| 4 | — | — | — | — | — | — | — | — | — |
| 4.5 | — | — | — | — | — | — | — | — | — |
| 5 | — | <0.01 | 0.33 | 0.71 | 1.33 | 2.65 | 9.06 | — | — |
| 7.5 | < 0.01 | 0.05 | — | — | — | — | — | — | — |
| 10 | 0.08 | 0.19 | 0.44 | 0.64 | 1.48 | 3.96 | 15.21 | — | — |
| 15 | 0.13 | 0.31 | 0.66 | 1.87 | 1.47 | — | 11.98 | — | — |
| 20 | — | 0.13 | 0.3 | 0.55 | 1.24 | — | 10.9 | — | — |
All corrosion rates are in millimeters per year (mm/y); to convert to mils (thousandths of an inch) per year, divide by 0.0254.
| Conc. Wt. % | 75°F | 100°F | 125°F | 150°F | 175°F | 200°F | 225°F | 250°F | Boiling |
| 24°C | 38°C | 52°C | 66°C | 79°C | 93°C | 107°C | 121°C | ||
| 1 | — | — | — | — | — | — | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | — | — | — | — | — | — | — | — | — |
| 4 | — | — | — | — | — | — | — | — | — |
| 5 | — | — | — | — | <0.01 | <0.01 | — | — | 0.47 |
| 10 | — | — | — | — | <0.01 | <0.01 | — | — | 0.78 |
| 20 | — | — | — | — | <0.01 | 0.36 | — | — | 1.35 |
| 30 | — | — | — | — | 0.01 | 0.55 | — | — | 1.53 |
| 40 | — | — | — | 0.02 | 0.05 | 0.54 | — | — | 1.95 |
| 50 | — | <0.01 | <0.01 | 0.01 | 0.26 | 0.56 | 0.93 | — | 3.68 |
| 60 | — | — | <0.01 | 0.09 | 0.27 | 0.73 | 1.07 | — | 8.46 |
| 70 | — | <0.01 | 0.01 | 0.11 | 0.36 | 0.98 | 1.38 | — | — |
| 80 | — | — | 0.31 | 1.13 | 2.62 | 4.52 | 4.7 | — | — |
| 90 | — | <0.01 | 0.67 | 2.01 | 3.25 | 6.55 | 6.25 | — | — |
| 96 | — | — | 0.45 | 1.86 | 2.04 | 1.86 | 1.52 | — | — |
All corrosion rates are in millimeters per year (mm/y); to convert to mils (thousandths of an inch) per year, divide by 0.0254.
| Chemical | Concentration | 100°F | 125°F | 150°F | 175°F | 200°F | Boiling |
| wt. % | 38°C | 52°C | 66°C | 79°C | 93°C | ||
| Acetic Acid | 99 | — | — | — | — | — | 0.03 |
| Chromic Acid | 5 | — | — | 0.02 | — | — | 0.40 |
| 10 | — | — | 0.14 | — | — | 1.23 | |
| Formic Acid | 88 | — | — | — | — | — | 0.05 |
| Hydrochloric Acid |
1 | — | — | <0.01 | <0.01 | <0.01 | 0.01 |
| 2 | — | <0.01 | <0.01 | — | — | 9.47 | |
| 2.5 | — | <0.01 | 1.04 | 2.06 | 4.23 | — | |
| 3 | <0.01 | <0.01 | — | — | — | — | |
| 5 | 0.33 | 0.71 | 1.33 | 2.65 | — | — | |
| 10 | 0.44 | 0.64 | 1.48 | 3.96 | — | — | |
| 15 | 0.66 | 1.87 | 1.47 | — | — | — | |
| 20 | 0.30 | 0.55 | 1.24 | — | — | — | |
| Nitric Acid |
50 | — | — | — | — | — | 0.08 |
| 60 | — | — | — | — | — | 0.14 | |
| 65 | — | — | — | — | — | 0.16 | |
| Phosphoric Acid (Reagent Grade) |
50 | — | — | — | — | <0.01 | 0.01 |
| 60 | — | — | — | — | — | 0.14 | |
| 70 | — | — | — | — | 0.01 | 0.35 | |
| 80 | — | — | — | — | — | 0.61 | |
| 85 | — | — | — | — | — | 0.84 | |
| Sulfuric Acid |
10 | — | — | — | <0.01 | <0.01 | 0.78 |
| 20 | — | — | — | <0.01 | 0.36 | 1.35 | |
| 30 | — | — | — | 0.01 | 0.55 | 1.53 | |
| 40 | — | — | 0.02 | 0.05 | 0.54 | 1.95 | |
| 50 | <0.01 | <0.01 | 0.01 | 0.26 | 0.56 | — | |
| 60 | — | <0.01 | 0.09 | 0.27 | 0.73 | — | |
| 70 | <0.01 | 0.01 | 0.11 | 0.36 | 0.98 | — | |
| 80 | — | 0.31 | 1.13 | 2.62 | 4.52 | — | |
| 90 | <0.01 | 0.67 | 2.01 | 3.25 | 6.55 | — | |
| 96 | — | 0.45 | 1.86 | 2.04 | 1.86 | — |
All corrosion rates are in millimeters per year (mm/y); to convert to mils (thousandths of an inch) per year, divide by 0.0254.
| Environment | Lowest Temp. Pitting Observed (24 hours) | Lowest Temp. Crevice Corrosion Observed (24 hours) |
|---|---|---|
| Green Death | 55°C | 45°C |
| Yellow Death | 55°C | 25°C |
Green Death: 11.5% H2 SO4 + 1.2% HCl + 1% FeCl3 + 1% CuCl2
Yellow Death: 4% NaCl + 0.1% Fe2 (SO4 )3 + 0.021M HCl
| Alloy | Time to Cracking |
|---|---|
| 316L | 2 h |
| 254SMO | 24 h |
| 28 | 36 h |
| 31 | 36 h |
| G-30® | 168 h |
| Chemical | Concentration | Temperature | Corrosion Rate | ||||
| wt. % | °F | °C | Weld Metal | Wrought Base Metal | |||
| mpy | mm/y | mpy | mm/y | ||||
| H2SO4 | 30 | 150 | 66 | <0.4 | <0.01 | <0.4 | <0.01 |
| H2SO4 | 50 | 150 | 66 | 0.4 | 0.01 | 0.4 | 0.01 |
| H2SO4 | 70 | 150 | 66 | 5.5 | 0.14 | 4.3 | 0.11 |
| H2SO4 | 90 | 150 | 66 | 102.4 | 2.60 | 102.8 | 2.61 |
| HCI | 5 | 100 | 38 | <0.4 | <0.01 | 13 | 0.33 |
| HCI | 10 | 100 | 38 | 27.6 | 0.70 | 17.3 | 0.44 |
| HCI | 15 | 100 | 38 | 25.2 | 0.64 | 26 | 0.66 |
| HCI | 20 | 100 | 38 | 20.5 | 0.52 | 11.8 | 0.30 |
| HNO3 | 70 | Boiling | 5.5 | 0.14 | 5.5 | 0.14 | |
Note: These specifications are believed to be accurate & reliable. However, they are not intended to be a substitute for professional engineering assistance which is a requisite to any specific application. These specifications primarily follow ASTM standards & Special Metal’s Nickel 200 values. Nickel Systems Inc. stocks multiple trademarked materials. Trademarked materials will vary slightly within the UNS numbers & properties found in the ASTM specifications. If you have strict requirements, request at the time of your quotation.
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Hastelloy G-30® is a high-performance, corrosion-resistant nickel-based alloy specifically engineered to excel in highly aggressive chemical environments. Its primary composition is nickel, chromium, iron, molybdenum, and copper. It offers enhanced resistance to strong oxidizing acids such as nitric acid, sulfuric acid, and phosphoric acid. Its superior corrosion resistance makes it a preferred material in industries like chemical processing, fertilizer production, power plants, and pollution control systems.
Check out Hastelloy G-30®’s chemical composition. it’s high chromium content is key for resisting oxidizing acids such as nitric acid.
Wet Process Phosphoric acid is phosphoric acid produced by the acidulation of phosphate rock with sulfuric acid. It is widely used in the fertilizer industry and in some industrial chemical process. Wet process phosphoric acid contains impurities such as fluorides, sulfates, and some heavy metals. These can make it to be highly corrosive. Hastelloy G-30 fasteners are specifically designed to resist this type of corrosion.
Hastelloy G-30® fasteners provide superior corrosion resistance in highly acidic environments, particularly against nitric acid, phosphoric acid, and sulfuric acid mixtures.
Hastelloy G-30® fasteners withstand aggressive chemical attacks and oxidizing conditions encountered in fertilizer production.
Hastelloy G-30® fasteners protect against acidic condensation and high-temperature oxidation in power plants.
Hastelloy G-30® fasteners ensure contamination-free manufacturing and resists corrosion in high-purity and sterile environments.
Hastelloy G-30® fasteners offers high-temperature strength and resistance to oxidation and corrosive aviation fuels.
Hastelloy G-30® fasteners provides exceptional resistance to seawater corrosion and biofouling in harsh marine conditions.
Hastelloy G-30® fasteners are resistant to organic acids, chlorides, and high-temperature steam cleaning.
Hastelloy G-30® fasteners ensure durability in corrosive and chemical-laden environments.
Hastelloy G-30® fasteners prevent material degradation in acidic and chlorine-rich environments.
Hastelloy G-30® fasteners provide excellent protection against aggressive acid exposure during metal extraction.
Nickel Systems Inc. is a trusted stocking supplier of Hastelloy G-30®, offering a reliable inventory of this high-performance corrosion-resistant pure commercial nickel fasteners. With a commitment to quality and customer satisfaction, we provide quick turnaround times and competitive pricing to meet your project needs. our experienced team is ready to assist you with expert guidance and tailored solutions for your fastener requirements. Contact us today to start your quotation, view some product samples below along with our products & related materials, and let Nickel Systems Inc. be your trusted partner for Hstelloy G-30® fastener supply!
