This specification covers high strength stainless steel bolting materials and bolting components for special purpose applications such as pressure vessels. Several grades of precipitation-hardened and duplex (ferritic-austenitic) stainless steels are covered. Selection will depend upon design, service conditions, mechanical properties and characteristics related to the application.
UNS DesignationB | TypeB | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel | Molybdenum | Nitrogen | Other Elements |
---|---|---|---|---|---|---|---|---|---|---|---|
Duplex (Ferritic-Austenitic) Grades | |||||||||||
S31100 | ... | 0.06 | 1.00 | 0.045 | 0.030 | 1.00 | 25.0-27.0 | 6.0-7.0 | ... | ... | Ti 0.25 |
S31260 | ... | 0.030 | 1.00 | 0.030 | 0.030 | 0.75 | 24.0-26.0 | 5.5-7.5 | 2.5-3.5 | 0.10-0.30 | Cu 0.20-0.80, W 0.10-0.50 |
S31803 | ... | 0.030 | 2.00 | 0.030 | 0.020 | 1.00 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 | ... |
S32101 | ... | 0.040 | 4.0-6.0 | 0.040 | 0.030 | 1.00 | 21.0-22.0 | 1.35-1.70 | 0.10-0.80 | 0.20-0.25 | Cu 0.10-0.80 |
S32202 | ... | 0.030 | 2.00 | 0.040 | 0.010 | 1.00 | 21.5-24.0 | 1.0-2.80 | 0.45 | 0.18-0.26 | ... |
S32205 | 2205 | 0.030 | 2.00 | 0.030 | 0.020 | 1.00 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 | ... |
S32304 | 2304 | 0.030 | 2.50 | 0.040 | 0.030 | 1.00 | 21.5-24.5 | 3.0-5.5 | 0.05-0.60 | 0.05-0.20 | Cu 0.05-0.60 |
832506 | 0.030 | 1.00 | 0.040 | 0.015 | 0.90 | 24.0-26.0 | 5.5-7.2 | 3.0-3.5 | 0.08-2.0 | w 0.05-0.30 | |
832550 | 255 | 0.040 | 1.50 | 0.040 | 0.030 | 1.00 | 24.0-27.0 | 4.5-6.5 | 2.9-3.9 | 0.10-0.25 | Cu 1.50-2.50 |
832750 | 2507 | 0.030 | 1.20 | 0.035 | 0.020 | 0.80 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 | Cu 0.50 |
832760 | 0.030 | 1.00 | 0.030 | 0.010 | 1.00 | 24.0-26.0 | 6.0-8.0 | 3.0-4.0 | 0.20-0.30 | Cu 0.50-1.00, W 0.50-1.00, %Cr+3.3x%Mo +16x%N≥40 |
|
832906 | ... | 0.030 | 0.80-1.50 | 0.030 | 0.030 | 0.50 | 28.0-30.0 | 5.8-7.5 | 1.50-2.60 | 0.30-0.40 | Cu 0.80 |
832950 | ... | 0.030 | 2.00 | 0.035 | 0.010 | 0.60 | 26.0-29.0 | 3.5-5.2 | 1.00-2.50 | 0.15-0.35 | ... |
839277 | ... | 0.025 | 0.80 | 0.025 | 0.002 | 0.80 | 24.0-26.0 | 6.5-8.0 | 3.0-4.0 | 0.23-.033 | Cu 1.20-2.00, W 0.80-1.20 |
Precipitation Hardening Grades | |||||||||||
815700 | 632 | 0.09 | 1.00 | 0.040 | 0.030 | 1.00 | 14.0-16.0 | 6.5·7.7 | 2.00-3.00 | ... | Al 0.75·1.50 |
817400 | 630 | 0.07 | 1.00 | 0.040 | 0.030 | 1.00 | 15.0-17.0 | 3.0·5.0 | ... | ... | Cu 3.0 5.0, |
817600 | 635 | 0.08 | 1.00 | 0.040 | 0.030 | 1.00 | 16.0-17.5 | 6.0·7.5 | ... | ... | Cb +Ta 0.15·0.45 Al 0.40, |
817700 | 631 | 0.09 | 1.00 | 0.040 | 0.030 | 1.00 | 16.0·18.0 | 6.5·7.7 | ... | ... | Ti 0.40·1.20 Al 0.75·1.50 |
835500 | 634 | 0.10 0.15 | 0.50 1.25 | 0.040 | 0.030 | 0.50 | 15.0·16.0 | 4.0·5.0 | 2.5 3.2 | 0.07 0.13 | Cb 0.10 0.50 |
A. Maximum or range unless otherwise indicated.
B. See Guide A959/A959M.
UNS Designation | Type | Solution TreatmentB,C °F [°C] | Mechanical Property Requirements in the Solution Treated Condition | |||||
---|---|---|---|---|---|---|---|---|
Tensile Strength ksi [MPa] | Yield Strength ksi [MPa] | Elongation in 2” [50 mm] or 4D, min. % | Reduction of Area, min. % | HardnessD | ||||
Rockwell, maximum | Brinell, maximum | |||||||
S15700 | 632 | ... | ... | ... | ... | ... | 100 HRB | 269 |
S17400 | 630 | Cool to below 90 [32] | ... | ... | ... | ... | 38 HRC | 363 |
S17600 | 635 | Air Cool | 120 [825] | 75 [515] | 10 | 45 | 32 HRC | 302 |
S17700 | 631 | ... | ... | ... | ... | ... | 98 HRB | 229 |
S35500 | 634 | Hold at ≤ -100 [-73] for at least 3 hours | ... | ... | ... | ... | ... | 363 |
A. Values shown are minimums or ranges unless maximum is indicated.
B. 1900 [1040] ± 25°F [15°C].
C. Quenched in water unless the table specifies another media.
D. Either Rockwell or Brinell testing is permitted unless thickness is below 1⁄2 ” in which case Rockwell is preferred.
Type | Condition | Suggested Hardening and/or Aging Temperatures, Time at Temperature, and Quench Media °F [°C] B,C,D,E | Maximum Thickness inch [mm] inclusive | Mechanical Properties | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Tensile Strength ksi [MPA] | Yield Strength ksi [MPA] | Elongation in 2” [50 mm] or 4D % | Reduction of Area, % | HardnessF | Impact Ft-lbf [J] | |||||
Rockwell, HRC | Brinell | |||||||||
630 | H900 | 900 [480], 1 hour | 8 | 190 [1310] | 170 [1170] | 10 | 35 | 40 | 388 | ... |
630 | H925 | 925 [495], 4 hours | 8 | 170 [1170] | 155 [1070] | 10 | 38 | 38 | 375 | 5 [6.8] |
630 | H1025 | 1025 [550], 4 hours | 8 | 155 [1070] | 145 [1000] | 12 | 45 | 35 | 331 | 15 [20] |
630 | H1075 | 1075 [580], 4 hours | 8 | 145 [1000] | 125 [860] | 13 | 45 | 32 | 311 | 20 [27] |
630 | H1100 | 1100 [595], 4 hours | 8 | 140 [965] | 115 [795] | 14 | 45 | 31 | 302 | 25 [34] |
630 | H1150 | 1150 [620], 4 hours | 8 | 135 [930] | 105 [725] | 16 | 50 | 28 | 277 | 30 [41] |
630 | H1150D | 1150 [620] for 4 hrs., air cool plus 1150 [620] for 4 hrs., air cool |
8 | 125 [860] | 105 [725] | 16 | 50 | 24-33 | 255-311 | 30 [41] |
630 | H1150M | 1400 [760] for 2 hrs., air cool plus 1150 [620] for 4 hrs., air cool |
8 | 115 [795] | 75 [520] | 18 | 55 | 24 | 255 | 55 [75] |
631 | RH950 | 1750 [955] for 10 min. to 1 h, rapidly cool to room temperature. Cool within 24 hrs. to -100 ± 10 [-75 ± 5], hold 8 hrs. min. Warm in air to room temperature. Heat to 950 [510] hold 1 h, air cool. | 4 | 185 [1280] | 150 [1030] | 6 | 10 | 41 | 388 | ... |
631 | TH1050 | 1400 [760] for 90 min. Cool to 55 ± 5 [15 ± 3] within 1 h, hold 1⁄2 h min., heat to 1050 [565], hold for 90 min., air cool | 6 | 170 [1170] | 140 [965] | 6 | 25 | 38 | 352 | ... |
632 | RH950 | Same as Type 631 | 4 | 200 [1380] | 175 [1210] | 7 | 25 | 44 | 415 | ... |
632 | TH1050 | Same as Type 631 | 6 | 180 [1240] | 160 [1100] | 8 | 25 | 38 | 375 | ... |
634 | H1000 | 1750 [955] for 10 min. to 1 h, water quench. Cool to -100 [75] min., hold 3 hrs. min. Temper at 1000 [540] hold for 3 h min, air cool. | ... | 170 [1170] | 155 [1070] | 12 | 25 | 37 | 341 | ... |
635 | H950 | 950 [510], 1⁄2 h | ... | 190 [1310] | 170 [1170] | 8 | 25 | 39 | 363 | ... |
635 | H1000 | 1000 [540], 1⁄2 h | ... | 180 [1240] | 160 [1100] | 8 | 30 | 37 | 352 | ... |
635 | H1050 | 1050 [565], 1⁄2 h | ... | 170 [1170] | 150 [1035] | 10 | 40 | 35 | 331 | ... |
A. Values shown are minimums or ranges unless maximum is indicated.
B. ± 25°F [15°C].
C. Temperatures are suggested and may be varied to obtain the required tensile properties.
D. Time refers to the minimum time the material is at temperature and may be extended to obtain required ductility properties.
E. Quenching shall be accomplished using air or gas cooling unless the table specifies another media.
F. Either Rockwell or Brinell testing is permitted unless thickness is below 1⁄2 ” in which case Rockwell is preferred.
UNS Designation | Solution Temperature, °F [°C] B,C | Size Range | Mechanical Properties | ||||
---|---|---|---|---|---|---|---|
Tensile Strength, ksi [MPA] | Yield Strength, ksi [MPA] | Elongation in 2” [50 mm] or 4D % | HardnessD | ||||
Rockwell, HRC maximum | Brinell, maximum | ||||||
831100 | 1900 [1040] | 90 [620] | 65 [450] | 20 | 30 | 290 | |
831260 | 1870 to 2010 [1020 to 1100] |
100 [690] | 70 [485] | 20 | 31 | 297 | |
831803 | 1900 [1040] | 90 [620] | 65 [450] | 25 | 30 | 290 | |
832101 | 1870 [1020] | 94 [650] | 65 [450] | 30 | 30 | 290 | |
832202 | 1800 to 1975 [980 to 1080] |
94 [650] | 65 [450] | 30 | 30 | 290 | |
832205 | 1900 [1040] | 95 [655] | 65 [450] | 25 | 30 | 290 | |
832304 | 1800 [980] | 90 [620] | 65 [450] | 18 | 32 | 302 | |
832506 | 1870 - 2050 | 90[620] | 65 [450] | 18 | 32 | 302 | |
[1020 - 1120] | |||||||
832550 | 1900 [1040] | 110[760] | 80 [550] | 15 | 31 | 297 | |
832750 | 1880 - 2060 | 2 in. and under | 116[800] | 80 [550] | 15 | 33 | 310 |
[1025 - 1125] | |||||||
>2 in. | 110 [760] | 75 [515] | 15 | 33 | 310 | ||
832/60 | 2010 [1100] | 109 (/bO] | 80 [5b0] | 2b | 30 | 290 | |
832900 | 1750 [955] | 90 [620] | 70 [485] | 15 | 30 | 290 | |
832906 | 1830 to 2100 | 109 [750] | 80 [550] | 25 | 33 | 310 | |
(1000 to 1150] |
A. Values shown are minimums or ranges unless maximum is indicated.
B. ± 25°F [15°C].
C. Quenched in water.
D. Either Rockwell or Brinell testing is permitted unless thickness is below 1⁄2 ” in which case Rockwell is preferred.