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Haynes 230

Haynes 230

Nickel (Ni) - 57.0 Balance
Chromium (Cr) - 22.0
Molybdenum (Mo) - 2.0
Iron (Fe) - 3.0 Max
Tungsten (W) - 14.0
Cobalt (Co) - 5.0 Max
Other

Key

Nickel
Copper
Chromium
Aluminum
Molybdenum
Iron
Titanium
Manganese
Cobalt
Other
  • Nickel (Ni) 57.0 Balance
  • Chromium (Cr) 22.0
  • Aluminum Al 0.3
  • Molybdenum (Mo) 2.0
  • Iron (Fe) 3.0 Max
  • Tungsten (W) 14.0
  • Manganese (Mn) 0.5
  • Cobalt (Co) 5.0 Max
  • Carbon (C) 0.1
  • Silicon (Si) 0.4
  • Niobium (Nb) 0.5 Max
  • Titanium (Ti) 0.1 Max
  • Lanthanum (La) 0.02
  • Boron (B) 0.015 Max

UNS N06230

HAYNES 230 is a nickel-chromium-tungsten-molybdenum alloy that combines excellent high-temperature strength, outstanding resistance to oxidizing environments up to 2100°F (1149°C) for prolonged exposures, premier resistance to nitriding environments, and excellent long-term thermal stability. It is readily fabricated and formed, and is castable. Other attractive features include lower thermal expansion characteristics than most high-temperature alloys, and a pronounced resistance to grain coarsening with prolonged exposure to high temperatures.

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Summary

  • Environment:
    Oxidation Resistant
  • Temperature Limit:
    2100 °F / 1149 °C
  • Ultimate Tensile (Typical):
    120 ksi / 827 mpa

Specifications & Technical Data

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

Specifications

  • Plate, Sheet & Strip: AMS 5878, ASME SB435
  • Rod & Bar: AMS 5891, ASME SB572
  • Seamless Pipe & Tube: ASME SB622
  • Fittings: ASME SB366
  • Forgings: AMS 5891, ASME SB564

Physical Properties

Physical Property Imperial Units Metric Units
Density RT 0.314 lb/in3 RT 8.69 g/cm3
Melting Temp. 2375-2500°F — 1301-1371°C —
Electrical Resistivity RT 49.2 μ0hm.in RT 125.0 μ0hm.m
200°F 49.5 μ0hm.in 100°C 125.8 μ0hm.m
400°F 49.8 μ0hm.in 200°C 126.5 μ0hm.m
600°F 50.2 μ0hm.in 300°C 127.3 μ0hm.m
800°F 50.7 μ0hm.in 400°C 128.4 μ0hm.m
1000°F 51.5 μ0hm.in 500°C 130.2 μ0hm.m
1200°F 51.6 μ0hm.in 600°C 131.2 μ0hm.m
1400°F 51.5 μ0hm.in 700°C 130.7 μ0hm.m
1600°F 50.3 μ0hm.in 800°C 129.1 μ0hm.m
1800°F 49.3 μ0hm.in 900°C 127.1 μ0hm.m
— — 1000°C 125.0 μ0hm.m
Thermal Conductivity RT 62 btu.in/h.ft2.°F RT 8.9 W/m.°C
200°F 71 btu.in/h.ft2.°F 100°C 10.4 W/m.°C
400°F 87 btu.in/h.ft2.°F 200°C 12.4 W/m.°C
600°F 102 btu.in/h.ft2.°F 300°C 14.4 W/m.°C
800°F 118 btu.in/h.ft2.°F 400°C 16.4 W/m.°C
1000°F 133 btu.in/h.ft2.°F 500°C 18.4 W/m.°C
1200°F 148 btu.in/h.ft2.°F 600°C 20.4 W/m.°C
1400°F 164 btu.in/h.ft2.°F 700°C 22.4 W/m.°C
1600°F 179 btu.in/h.ft2.°F 800°C 24.4 W/m.°C
1800°F 195 btu.in/h.ft2.°F 900°C 26.4 W/m.°C
— — 1000°C 28.4 W/m.°C
Thermal Diffusivity RT 3.8 x 10-3in2/sec RT 24.2 x 10-3cm2/s
200°F 4.1 x 10-3in2/sec 100°C 26.8 x 10-3cm2/s
400°F 4.7 x 10-3in2/sec 200°C 29.9 x 10-3cm2/s
600°F 5.2 x 10-3in2/sec 300°C 32.9 x 10-3cm2/s
800°F 5.6 x 10-3in2/sec 400°C 35.7 x 10-3cm2/s
1000°F 6.1 x 10-3in2/sec 500°C 38.5 x 10-3cm2/s
1200°F 6.5 x 10-3in2/sec 600°C 41.9 x 10-3cm2/s
1400°F 6.7 x 10-3in2/sec 700°C 43.0 x 10-3cm2/s
1600°F 6.7 x 10-3in2/sec 800°C 43.2 x 10-3cm2/s
1800°F 7.3 x 10-3in2/sec 900°C 44.4 x 10-3cm2/s
— — 1000°C 48.2 x 10-3cm2/s
Mean Coefficient of Thermal Expansion 70-200°F 6.5 μin/in. °F 25-100°C 11.8 x 10-6m/m.°C
70-400°F 6.9 μin/in. °F 25-200°C 12.4 x 10-6m/m.°C
70-600°F 7.2 μin/in. °F 25-300°C 12.8 x 10-6m/m.°C
70-800°F 7.4 μin/in. °F 25-400°C 13.2 x 10-6m/m.°C
70-1000°F 7.6 μin/in. °F 25-500°C 13.6 x 10-6m/m.°C
70-1200°F 8.0 μin/in. °F 25-600°C 14.1 x 10-6m/m.°C
70-1400°F 8.3 μin/in. °F 25-700°C 14.7 x 10-6m/m.°C
70-1600°F 8.6 μin/in. °F 25-800°C 15.2 x 10-6m/m.°C
70-1800°F 8.9 μin/in. °F 25-900°C 15.7 x 10-6m/m.°C
— — 25-1000°C 16.1 x 10-6m/m.°C
Specific Heat 100°F 0.095 Btu/lb.°F 100°C 397 J/kg.°C
200°F 0.099 Btu/lb.°F 200°C 419 J/kg.°C
400°F 0.104 Btu/lb.°F 300°C 435 J/kg.°C
600°F 0.108 Btu/lb.°F 400°C 448 J/kg.°C
800°F 0.112 Btu/lb.°F 500°C 465 J/kg.°C
1000°F 0.112 Btu/lb.°F 600°C 473 J/kg.°C
1200°F 0.134 Btu/lb.°F 700°C 486 J/kg.°C
1400°F 0.140 Btu/lb.°F 800°C 574 J/kg.°C
1600°F 0.145 Btu/lb.°F 900°C 595 J/kg.°C
1800°F 0.147 Btu/lb.°F 1000°C 609 J/kg.°C
— — 1000°C 617 J/kg.°C
Dynamic Modulus of Elasticity RT 30.3 x 106 psi RT 209 GPa
200°F 30.1 x 106 psi 100°C 207 GPa
400°F 29.0 x 106 psi 200°C 200 GPa
600°F 27.8 x 106 psi 300°C 193 GPa
800°F 26.8 x 106 psi 400°C 186 GPa
1000°F 25.9 x 106 psi 500°C 181 GPa
1200°F 24.9 x 106 psi 600°C 175 GPa
1400°F 23.6 x 106 psi 700°C 168 GPa
1600°F 22.2 x 106 psi 800°C 159 GPa
1800°F 20.7 x 106 psi 900°C 150 GPa
2000°F 19.1 x 106 psi 1000°C 141 GPa
Dynamic Shear Modulus RT 11.5 x 106 psi RT 79 GPa
200°F 11.4 x 106 psi 100°C 79 GPa
400°F 11.0 x 106 psi 200°C 76 GPa
600°F 10.5 x 106 psi 300°C 73 GPa
800°F 10.1 x 106 psi 400°C 70 GPa
1000°F 9.7 x 106 psi 500°C 67 GPa
1200°F 9.3 x 106 psi 600°C 64 GPa
1400°F 8.8 x 106 psi 700°C 61 GPa
1600°F 8.2 x 106 psi 800°C 57 GPa
1800°F 7.6 x 106 psi 900°C 52 GPa
2000°F 7.0 x 106 psi 1000°C 48 GPa
Poisson’s Ratio RT 0.31 RT 0.31
200°F 0.31 100°C 0.31
400°F 0.32 200°C 0.32
600°F 0.32 300°C 0.32
800°F 0.33 400°C 0.33
1000°F 0.33 500°C 0.33
1200°F 0.34 600°C 0.34
1400°F 0.34 700°C 0.34
1600°F 0.35 800°C 0.34
1800°F 0.36 900°C 0.35

RT= Room Temperature

Tensile Properties

Tensile Properties of 230® Sheet
Test Temperature 0.2% Yield Strength Ultimate Tensile Strength Elongation
°F °C ksi MPa ksi MPa %
70 21 60.4 417 121.4 837 47.3
1000 538 42.6 294 100.1 690 51.74
1200 649 42.2 291 96.6 666 56.9
1400 760 45.1 311 78.0 538 59.5
1600 871 34.2 236 44.6 308 74.2
1800 982 17.8 123 24.5 169 54.1
2000 1093 10.0 69 13.1 90 37.0

 

Tensile Properties of 230® Plate
Test Temperature 0.2% Yield Strength Ultimate Tensile Strength Elongation
°F °C ksi MPa ksi MPa %
70 21 55.5 383 123.6 852 46.0
1000 538 38.1 263 102.5 706 53.2
1200 649 38.7 267 98.2 677 53.0
1400 760 37.7 260 77.2 533 68.0
1600 871 33.9 234 45.1 311 94.0
1800 982 16.8 116 24.3 168 91.2
2000 1093 9.1 63 13.2 91 92.1

Creep and Rupture Properties

Stress-Rupture Lives for Various Alloys at Fixed Test Conditions (Bar and Plate)*
Alloy Hours to Rupture
1400°F (760°C) 1600°F (871°C) 1800°F (982°C)
15.0 ksi (103 Mpa) 4.1 ksi (31 Mpa) 2.0 ksi (14 Mpa)
230® 8,200 65,000 5,000
625 19,000 14,000 2,400
X 900 5,000 2,100
800H 130 1,200 920
INCONEL® 601
 50 1,200 1,000
253 MA® 140 900 720
600 15 280 580
316 SS 100 240 130
RA330® 30 230 130
304 SS 10 100 72

*Based upon Larson-Miller extrapolation

Comparison of Stress to Produce 1% Creep in 1000 Hours (Sheet)

230® Sheet, Solution Annealed
Temperature Creep Approximate Initial Stress to Produce Specified Creep in
10 Hours 100 Hours 1,000 Hours 10,000 Hours
°F °C % ksi MPa ksi MPa ksi MPa ksi MPa
1200 649 0.5 — — 31 214 — — — —
1 — — 35 241 24* 165* — —
R — — 51 352 36 248 28 193
1300 704 0.5 29 200 21 145 14.5 100 — —
1 33 228 23 159 17 114 — —
R 47 324 34 234 26 179 20 134
1400 760 0.5 19.2 132 13.7 94 9.6 66 7.3 50
1 21 145 15.5 107 11.5 79 8.6 59
R 32 221 24.5 169 18.2 125 13.2* 91*
1500 816 0.5 14.2 98 10.3 71 7.5 52 5.4* 37*
1 15 103 11.2 77 8.6 59 6.5* 45*
R 23* 161* 17.5 121 12.5 86 8.4* 58*
1600 871 0.5 11.3 78 8.1 56 5.7 39 4.0 28
1 11.7 81 9.0 62 6.2 43 4.3 30
R 17.0 117 12.5 86 8.2 57 5.6* 39*
1700 927 0.5 7.7 53 5.5 38 3.8 26 2.4* 17*
1 8.8* 61* 6.2 43 4.2 29 2.7* 19*
R 12.0* 83* 8.0 55 5.1 35 3.2 22
1800 982 0.5 7.0 48 3.6 25 1.8 12 0.85 5.9
1 8.0 55 4.1 28 2.0 14 1.0 6.9
R 10.0 69 5.4 37 2.6 18 1.2* 8.3*
1900 1038 0.5 — — 1.7 12 0.8 5.5 — —
1 — — 2.0 14 0.9 6.2 — —
R — — 3.0* 21* 1.5 10 — —
2000 1093 0.5 — — — — — — — —
1 — — 0.9 6.2 — — — —
R — — — — — — — —

*Significant Extrapolation

230® Plate, Solution Annealed
Temperature Creep Approximate Initial Stress to Produce Specified Creep in
10 Hours 100 Hours 1,000 Hours 10,000 Hours
°F °C % ksi MPa ksi MPa ksi MPa ksi MPa
1200 649 0.5 — — 35 241 23 159 — —
1 — — 39 269 26.5 183 17.5 121
R 75 517 56 386 41 283 29 200
1300 704 0.5 35 241 21.5 148 14.5 100 — —
1 39 269 24.5 169 18 124 12.3* 85*
R 59 407 42 290 30 207 21 145
1400 760 0.5 19 131 13.5 93 10.0 69 — —
1 23 159 15.9 110 11.5 79 9.0* 62*
R 37 255 27 186 20 138 14.2 98
1500 816 0.5 14.0 97 10.4 72 8.2 57 6.1 42
1 16.5 114 12.5 86 9.5 66 6.9 48
R 26 179 20 138 14.0 97 9.8 68
1600 871 0.5 10.3 71 7.6 52 5.6 39 4.0 28
1 11.7 81 9.0 62 6.2 43 4.3 30
R 20 138 13.7 94 9.5 66 6.2 43
1700 927 0.5 7.8 54 5.7 39 3.9 27 2.5 17
1 8.8 61 6.8 47 4.5 31 2.7 19
R 15.0 103 10.0 69 6.0 41 3.6 25
1800 982 0.5 5.8 40 3.5 24 1.8 12 0.90 6.2
1 6.3 43 4.0 28 2.1 14 1.1 7.6
R 9.4 65 6.0 41 3.2 33 1.7 12
1900 1038 0.5 4.0 28 2.0 14 0.90 6.2 — —
1 4.4 30 2.2 15 1.0 6.9 0.50* 3.4*
R 7.0 48 3.7 26 1.8 12 1.0 6.9
2000 1093 0.5 1.9 13 0.80 5.5 0.35 2.4 — —
1 2.3 16 1.0 6.9 0.47 3.2 0.20* 1.4*
R 4.2 29 2.1 14 1.0 6.9 0.55 3.8
2100 1149 0.5 0.80 5.5 0.03* 2.1* — — — —
1 1.0 6.9 0.43 3.0 — — — —
R 2.3 16 1.2 8.3 0.60 4.1 — —

*Significant Extrapolation

Low Cycle Fatigue

Strain-controlled Tests in 800 to 1800°F (425 to 980°C) at f=20 cpm (0.33 Hz), R=-1

Compilation of axial LCF test results (R=-1, f=0.33 Hz)
Temperature Δεtot/% Ni, Cycles to Initiation Nf, Cycles to Failure
°F °C
800 427 1.50 2230 2398
1.00 8480 8742
0.80 14,918 16,575
0.65 45,124 46,523
0.55 103,910 115,456
1000 538 1.50 1329 1540
1.25 1974 2368
1.00 3330 4413
0.80 7864 8734
0.70 8423 9876
0.60 38,696 40,604
0.56 73,014 74,132
0.53 — 200,005*
0.50 — 201,190*
1200 649 1.25 1022 1257
1.00 1852 2254
0.80 3431 4248
0.60 8962 11,058
0.50 82,275 85,563
0.45 — 200,002*
0.40 — 200,005*
1400 760 0.80 1896 2218
0.40 20,519 21,564
0.40 43,915 45,279
0.30 — 203,327*
1400 760 1.00 870 1097
1.00 827 990
0.70 3166 3622
0.50 8153 8490
0.40 51,285 57,819
0.40 68,451 75,470
0.38 95,165 96,844
0.37 91,879 97,612
0.35 — 202,920*
0.30 — 150,000*
1600 871 0.70 1279 1504
0.50 3939 4299
0.50 3176 3473
0.40 9712 10,837
0.40 9296 10,781
0.35 19,179 20,964
0.31 61,898 63,253
0.30 65,691 66,926
0.25 — 200,770*
1800 982 0.60 818 1218
0.50 1506 2582
0.40 3520 4223
0.40 3070 4784
0.30 19,810 21,311
0.30 13,904 19,200
0.25 105,140 106,020
0.25 116,960 119,890

*Indicates a run-out

Thermal Stability

Room-Temperature Properties after Thermal Exposure
Condition 0.2% Yield Strength Ultimate Tensile Strength Elongation R.A. Impact Strength
ksi ksi % % ft-lb
MA 58.4 123.1 50 47.2 54
+1200/8,000 hr. 57.9 128.0 36.4 39 31.4
+1200/20,000 hr. 57.6 128.4 34.8 37 28.9
+1200/30,000 hr. 59.4 129.9 34 38.3 —
+1200/50,000 hr. 61.2 131.7 33.9 36.9 25.8
+1400/8,000 hr. 59.2 129.7 32 34.3 18.7
+1400/20,000 hr. 55.0 126.9 31.2 31.6 18.8
+1400/30,000 hr. 54.3 126.9 31.3 33.9 —
+1400/50,000 hr. 55.2 127.7 32.2 32.5 20.7
+1600/8,000 hr. 54.3 122.7 36.2 34.6 21.6
+1600/20,000 hr. 50.1 121.6 34.4 31.1 19.5
+1600/30,000 hr. 49.6 120.0 32.1 28.6 —
+1600/50,000 hr. 116.7 116.7 25.2* 20.2 14.8
Retained Room Temperature Tensile Ductility after 8000 Hour Exposure at Temperature
Exposure Temperature Room Temperature Tensile Elongation
230 188 625 X
°F % % % %
1200 36.4 29.1 18 19
1400 32 10.8 13 19
1600 36.2 22.2 26 30

Hardness and Grain Size

Solution Annealed Room Temperature Hardness
Form
 Hardness, HRBW Typical ASTM Grain Size
Sheet 92 4 – 6.5
Plate 92 3 – 5
Bar 90 3 – 5

HRBW = Hardness Rockwell “B”, Tungsten Indentor.

Resistance to Grain Growth

Time Exposure Grain Size for Alloys Exposed at Temperature for Various Times*
HAYNES® 230® Alloy HAYNES® 188 Alloy
 HASTELLOY® X Alloy
h 2150°F (1177°C) 2200°F (1204°C) 2150°F (1177°C) 2200°F (1204°C) 2150°F (1177°C) 2200°F (1204°C)
0 4 – 41/2 4 – 41/2 4 – 5 4 – 5 3 1/2 3 1/2
1 4 – 5 4 – 41/2 2 – 5 2 – 4 3 1/2 0 – 1
4 4 – 41/2 4 – 41/2 3 1/2 3 3 1/2 0 – 1
24 4 4 – 41/2 0 – 2 1 – 3 00 – 4 0 – 11/2

*Plate Product

Oxidation Resistance

Comparative Dynamic Oxidation
Alloy 1600°F (870°C), 2000 h, 30-min cycles 1800°F (980°C), 1000 h, 30-min cycles 2000°F (1090°C), 500 h, 30-min cycles 2100°F (1150°C), 200 h, 30-min cycles
Metal Loss Average Metal Affected Metal Loss Average Metal Affected Metal Loss Average Metal Affected Metal Loss Average Metal Affected
mils µm mils µm mils µm mils µm mils µm mils µm mils µm mils µm
188 1.1 28 2.9 74 1.1 28 3.2 81 10.9 277 13.1 333 8.0 203 9.7 246
230® 0.9 23 3.9 99 2.8 71 5.6 142 7.1 180 9.9 251 6.4 163 13.1 333
617 2.0 51 7.8 198 2.4 61 5.7 145 13.3 338 20.9 531 13.8 351 15.3 389
625 1.2 30 2.2 56 3.7 94 6.0 152 — — Consumed — — — —
556® 1.5 38 3.9 99 4.1 104 6.7 170 9.9 251 12.1 307 11.5 292 14.0 356
X 1.7 43 5.3 135 4.3 109 7.3 185 11.6 295 14.0 356 13.9 353 15.9 404
HR-120® — — — — 6.3 160 8.3 211 — — — — — — — —
RA330 2.5 64 5.0 127 8.7 221 10.5 267 15.4 391 17.9 455 11.5 292 13.0 330
HR-160® — — — — 5.4 137 11.9 302 12.5 — 18.1 460 8.7 221 15.5 394
310SS 6.0 152 7.9 201 16.0 406 18.3 465 — — — — — — Consumed
800H 3.9 99 9.4 239 22.9 582 Through Thickness — — Consumed after 300h — — Consumed

 

Water Vapor Testing
Alloy 1008 hours @ 1600F Cycled 1x/ week in air+10%H2 O 1008 hours @ 1600F Cycled 1x/week in air+20%H2 O 6 months @ 1400F Cycled 1x/ week in air+10%H2 O
Metal Loss Average Metal Affected Metal Loss Average Metal Affected Metal Loss Average Metal Affected
mils Per Side mm Per Side mils Per Side mm Per Side mils Per Side mm Per Side mils Per Side mm Per Side mils Per Side mm Per Side mils Per Side mm Per Side
230® 0.07 0.002 0.53 0.013 0.03 0.001 0.21 0.005 0.05 0.001 0.35 0.009
625 0.11 0.003 0.50 0.013 0.04 0.001 0.27 0.007 — — — —
X 0.03 0.001 0.50 0.013 0.04 0.001 0.30 0.008 — — — —
253MA 0.66 0.017 1.59 0.040 0.08 0.002 0.68 0.017 — — — —
800HT — — — — — — — — 0.12 0.003 0.82 0.021
347SS 0.86 0.022 1.48 0.038 0.18 0.005 0.18 0.005 0.46 0.012 1.26 0.032

 

Amount of metal affected for high-temperature sheet (0.060 – 0.125”) alloys exposed for 360 days (8,640 h) in flowing air.
Alloy 1600°F 1800°F  2000°F  2100°F 
Metal Loss* Average Metal Affected Metal Loss* Average Metal Affected Metal Loss* Average Metal Affected Metal Loss* Average Metal Affected
mils µm mils µm mils µm mils µm mils µm mils µm mils µm mils µm
625 0.3 8 1.4 36 — — — — — — — — — — — —
230® 0.2 5 1.4 36 0.1 3 2.5 64 3.4 86 11 279 28.5 724 34.4 874
617 0.3 8 1.6 41 — — — — — — — — — — — —
HR-120® 0.3 8 1.6 41 0.5 13 3.3 84 18.1 460 23.2 589 33.6 853 44 1118
25 0.3 8 1.7 43 — — — — — — — — — — — —
188 0.3 5 1.8 46 — — — — — — — — — — — —
556® 0.3 8 1.9 48 0.5 13 6.2 157 15 381 24.1 612 — — — —
X 0.3 8 2.2 56 0.2 5 2.8 71 17.1 434 26.2 665 51.5 1308 55.4 1407
800HT 0.4 10 2.9 74 — — — — — — — — — — — —
HR-160® — — — — 1.7 43 13.7 348 7.2 183 30.8 782 12 305 45.6 1158

*Metal loss was calculated from final and initial metal thicknesses; i.e. ML = (OMT – FMT) /2

Static Oxidation Comparison

Alloy		 Comparative Oxidation Resistance in Flowing Air, 1008 Hours*
1800°F (982°C) 2000°F (1093°C) 2100°F (1149°C) 2200°F (1204°C)
Metal Loss Average Metal Affected Metal Loss Average Metal Affected Metal Loss Average Metal Affected Metal Loss Average Metal Affected
mils µm mils µm mils µm mils µm mils µm mils µm mils µm mils µm
230® 0.2 5 1.5 38 0.5 13 3.3 84 1.2 30 4.4 112 4.7 119 8.3 211
188 0.1 3 1.1 28 0.5 13 3.7 94 8.6 218 10.7 272 5.2 132 48.2 1224
601 0.4 10 1.7 43 1.3 33 3.8 97 2.8 71 6.5 165 4.4 112 7.5 191
617 0.3 8 2.0 51 0.6 15 3.8 97 1.0 25 5.2 132 10.7 272 12.6 320
X 0.2 5 1.5 38 1.3 33 4.4 112 3.6 91 6.1 115 — — — —
800HT 0.5 13 4.1 104 7.6 193 11.6 295 12.4 315 15.0 381 — — — —
446 SS — — — — 13 330 14.4 366 — — >21.5 >546 — — — —
316 SS 12.3 312 14.2 361 — — >17.5 >445 — — >17.5 >445 — — — —

*Metal Loss + Average Internal Penetration

Corrosion Resistance

Nitriding Resistance – Test in flowing ammonia at 1200°F (650°C) and 1800°F (980°C) for 168 hours
Alloy
 Nitrogen Absorption (mg/cm2)
1800°F (982°C) 2000°F (1093°C) 2100°F (1149°C)
230® 0.7 1.4 1.5
600 0.8 0.9 0.3
625 0.8 2.5 3.3
X 1.7 3.2 3.8
RA330® — 3.9 3.1
800H 4.3 4.0 5.5
316 SS 6.9 6.0 3.3
310 SS 7.4 7.7 9.5
304 SS 9.8 7.3 3.5

 

Hydrogen Embrittlement
Test Temperature
 Hydrogen Pressure
 Ratio of Notched Tensile Strength, Hydrogen/Air
°F °C psig MPa
70 21 3000 21 0.92
70 21 5000 34 1.07

Tests were performed in MIL-P-27201B grade hydrogen, with a crosshead speed of 0.005 in/min (0.13 mm/min). Specimens were notched with a KT value of 8.0.

Aqueous Corrosion Resistance
Alloy
 Corrosion Rate (mils per year)
10% HNO3 Boiling 10% H2SO4 150°F (66°C) 10% HCl 150°F (66°C)
230® 0.3 0.6 112
625 0.7 0.4 65
600 0.8 41.8 336
316 SS 1 17.8 3408
X — <0.1 99

Fabrication

Heat Treatment

HAYNES® 230® alloy is normally final solution heat-treated at 2250°F (1230°C) for a time commensurate with section thickness. Solution heat-treating can be performed at temperatures as low as about 2125°F (1165°C), but resulting material properties will be altered accordingly.

Effect of Cold Reduction Upon Room-Temperature Tensile Properties*
Cold Reduction Subsequent Anneal Temperature 0.2% Offset Yield Strength Ultimate Tensile Strength Elongation
% ksi MPa ksi MPa %
0 None 61.8 425 128.2 885 46.6
10 104 715 144.5 995 31.8
20 133.4 920 163.9 1130 16.8
30 160.1 1105 187.5 1295 9.7
40 172.4 1190 201.5 1390 7.5
50 184.6 1275 214.6 1480 6.0
10 1950°F (1066°C) 91.9 636 143.5 990 32.9
20 80.8 555 141.9 980 35.6
30 75.9 525 142.1 980 35.7
40 81.2 560 145.5 1005 32.3
50 86.1 595 147.7 1020 34.6
10 2050°F (1121°C) 80.8 555 139.0 960 36.5
20 65.4 450 135.7 935 39.2
30 72.0 495 140.0 965 37.6
40 76.1 525 142.3 980 35.5
50 80.8 555 143.9 990 36.3
10 2150°F (1177°C) 55.5 385 129.5 895 43.7
20 64.4 445 134.3 925 40.1
30 70.2 485 138.1 950 38.5
40 73.4 505 139.2 960 38.1
50 71.9 495 137.7 950 39.1

*Based upon rolling reductions taken upon 0.120-inch (3.0 mm) thick sheet. Duplicate tests.

Welding

Room Temperature Transverse Weld Tensile Results – GTAW of 0.205-in / 5.2 mm Plate
0.2% Offset Yield Strength Ultimate Tensile Strength Elongation Fracture Location
ksi MPa ksi MPa %
60.2 415 117.7 812 29.6 Weld Metal
58.4 403 113.4 782 28.2 Weld Metal

 

Transverse Weld Tensile Results – GTAW of 0.5-in / 12.7 mm Plate
Test Temperature 0.2% Offset Yield Strength Ultimate Tensile Strength Elongation Fracture Location
°F °C ksi MPa ksi MPa %
Room Temp. 65.5 452 126.8 874 37.3 Weld Metal
63.8 440 120.0 827 27.0 Weld Metal
1600 871 38.4 265 60.6 418 44.9 Base Metal
34.8 240 61.8 426 28.9 Weld Metal

 

Room Temperature Transverse Weld Tensile Results – GMAW of 2.0-in / 50.8 mm Plate
Ultimate Tensile Strength Fracture Location
ksi MPa
116 800 Weld Metal
117 807 Weld Metal
115 793 Weld Metal
116 800 Weld Metal

 

Room Temperature Transverse Weld Tensile Results – GTAW of 3.0-in / 76.2 mm Plate
Sample Location 0.2% Offset Yield Strength Ultimate Tensile Strength Elongation Reduction of Area Fracture Location
ksi MPa ksi MPa % %
Weld Face 74.1 511 109.5 755 27.2 30.9 Weld Metal
74.6 514 110.7 763 34.8 44.4 Weld Metal
Weld Center 76.5 527 113.3 781 33.1 37.6 Base Metal
76.8 530 111.2 767 26.7 32.9 Weld Metal
Weld Root 74.8 516 109.9 758 19.6 24.1 Base Metal
74.0 510 115.0 793 31.0 41.3 Weld Metal

 

HAYNES® 230-W® All-Weld-Metal Tensile Test Results
Test Temperature 0.2% Offset Yield Strength Ultimate Tensile Strength Elongation
°F °C ksi MPa ksi MPa %
RT RT 75.7 520 112.6 775 27.3
1800 980 21.2 145 22.7 155 24.6
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