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Hastelloy G30

Hastelloy G30

Nickel (Ni) - 42.0
Chromium (Cr) - 30.0
Molybdenum (Mo) - 5.0
Iron (Fe) - 15
Tungsten (W) - 3.0
Manganese (Mn) - 1.0
Cobalt (Co) - 3.5
Other

Key

Nickel
Copper
Chromium
Aluminum
Molybdenum
Iron
Titanium
Manganese
Cobalt
Other
  • Nickel (Ni) 42.0
  • Chromium (Cr) 30.0
  • Molybdenum (Mo) 5.0
  • Iron (Fe) 15
  • Tungsten (W) 3.0
  • Manganese (Mn) 1.0
  • Cobalt (Co) 3.5
  • Carbon (C) 0.02
  • Silicon (Si) 0.5

UNS N06030

Hastelloy G30 shows superior resistance to oxidizing acids, in particular phosphoric.

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Summary

  • Environment:
    Moderately Corrosive: Acids & Chemicals
  • Temperature Limit:
    1000 °F / 583 °C
  • Ultimate Tensile (Typical):
    100 ksi / 689 mpa

Specifications & Technical Data

If your question isn’t answered below, download the complete technical data sheet here.

Specifications

  • Plate, Sheet & Strip: ASTM B582, ASME SB582
  • Rod & Bar: ASTM B581, ASME SB581
  • Seamless Pipe & Tube: ASTM B622, ASME SB622
  • Welded Pipe & Tube: ASTM B619/B626, ASME SB619/SB626
  • Fittings: ASTM B366/B462, ASME SB366/SB462
  • Forgings: ASTM B462, ASME SB462
  • Others: NACE MR0175, ISO 15156

Physical Properties

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

Mechanical Properties

Tensile Strength and Elongation
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

Impact Strength
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.

Hardness
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.

Corrosion Resistance – Hydrochloric Acid

Hydrochloric Acid Corrosion Rate of G-30 (mm/y)
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.

Iso-Corrosion Diagram for G-30 in Hydrochloric Acid

 

Corrosion Resistance – Sulfuric Acid

Sulfuric Acid Corrosion Rate of G-30 (mm/y)
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.

Iso-Corrosion Diagram for G-30 in Sulfuric Acid

Iso-Corrosion Diagram for G-30 in Sulfuric Acid

Corrosion Resistance – Reagent Grade Solutions

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.

Resistance to Pitting and Crevice Corrosion

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

Resistance to Stress Corrosion Cracking

Test in Boiling 45% magnesium chloride (ASTM Standard G 36)
Alloy Time to Cracking
316L 2 h
254SMO 24 h
28 36 h
31 36 h
G-30® 168 h

Corrosion Resistance of Welds

Test using MIG Weld Passes
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

 

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