E-mail : inquiry@ronsteel.comPhone : +8615308477503
We are committed to providing one-stop service for steel pipe products to customers around the world.
Heat Treatment Requirements
|
Designation/Type |
Temperature |
Cooling/Testing Requirements |
|
Austenitic (Chromium-Nickel) (Chromium-Nickel-Manganese) |
||
|
All Cr-Ni steels except as listed below |
1900°F [1040°C] minimum |
A |
|
302, S30215, S30452, S30615, 308, 309, 309Cb, |
1900°F [1040°C] minimum |
B |
|
310, 310Cb, S32615, S33228, S38100 |
|
|
|
304H, 309H, 310H, 316H |
1900°F [1040°C] minimum |
B |
|
309HCb, 310HCb, 321H, 347H, 348H |
|
|
|
Cold Worked |
2000°F [1095°C] minimum |
B |
|
Hot Finished |
1925°F [1050°C] minimum |
B |
|
N08811 |
2100°F [1150°C] minimum |
B |
|
N08020 |
1700° to 1850°F [925° to 1010°C] |
B |
|
N08367 |
2025°F [1105°C] minimum |
B |
|
N08810 |
2050°F [1120°C] minimum |
B |
|
N08904 |
2000°F [1095°C] minimum |
B |
|
N08926 |
2010°F [1100°C] minimum |
B |
|
S20161 |
1900° to 2000°F [1040° to 1095°C] |
B |
|
S30600, S30601 |
2010° to 2140°F [1100° to 1170°C] |
B |
|
S31254, S31266, S32050, S32654 |
2100°F [1150°C] minimum |
B |
|
S33228 |
2050 to 2160°F [1120 to 1180°C] |
B |
|
S34565 |
2050° to 2140°F [1120° to 1170°C] |
B |
|
S35315 |
2010°F [1100°C] minimum |
B |
|
Duplex (Austenitic-Ferritic) |
||
|
S31200, S31803, S32001, S32550 |
1900°F [1040°C] minimum |
B |
|
S31260 |
1870° to 2010°F [1020° to 1100°C] |
B |
|
S32205 |
1900°F [1040°C] minimum |
C |
|
S32304 |
1800°F [980°C] minimum |
B |
|
S32520 |
1975 to 2050°F [1080 to 1120°C] |
B |
|
S32750 |
1880° to 2060°F [1025° to 1125°C] |
B |
|
S32760 |
2010°F [1100°C] minimum |
B |
|
S32900 |
1750° 6 25°F [955° 6 15°C] |
B |
|
S32950 |
1850° 6 25°F [1010° 6 15°C] |
B |
A Quenched in water or rapidly cooled by other means at a rate sufficient to prevent reprecipitation of carbides, as demonstrable by the capability of passing the test for resistance to intergranular corrosion specified in 18.2.
B Quenched in water or rapidly cooled by other means.
C Quenched in water, except that coiled product heat treated in a continuous annealing line shall be water quenched or rapidly cooled by other means.
Chemical Requirements (Product Analysis Tolerances)
|
Elements |
Limit or Maximum of Specified Range, % |
Tolerance Over the Maximum Limit or Under the Minimum Limit |
Elements |
Limit or Maximum of Specified Range, % |
Tolerance Over the Maximum Limit or Under the Minimum Limit |
|
Carbon |
to 0.010, incl over 0.010 to 0.030, incl over 0.030 to 0.20, incl over 0.20 to 0.60, incl over 0.60 to 1.20, incl |
0.002 0.005 0.01 0.02 0.03 |
Titanium
Cobalt |
to 1.00, incl over 1.00 to 3.00, incl over 0.05 to 0.50, incl over 0.50 to 2.00, incl over 2.00 to 5.00, incl |
0.05 0.07 0.01B 0.02 0.05 |
|
Manganese |
to 1.00, incl over 1.00 to 3.00, incl over 3.00 to 6.00, incl over 6.00 to 10.00, incl over 10.00 to 15.00, incl over 15.00 to 20.00, incl |
0.03 0.04 0.05 0.06 0.10 0.15 |
Columbium plus tantalum
Tantalum |
to 1.50, incl
to 0.10, incl |
0.05
0.02 |
|
Phosphorus |
to 0.040, incl over 0.040 to 0.20, incl |
0.005 0.010 |
Copper |
to 0.50, incl over 0.50 to 1.00, incl |
0.03 0.05 |
|
Sulfur |
to 0.040, incl over 0.040 to 0.20, incl over 0.20 to 0.50, incl |
0.005 0.010 0.020 |
|
over 1.00 to 3.00, incl over 3.00 to 5.00, incl over 5.00 to 10.00, incl |
0.10 0.15 0.20 |
|
Silicon |
to 1.00, incl over 1.00 to 3.00, incl over 3.00 to 6.00, incl |
0.05 0.10 0.15 |
Aluminum |
to 0.15, incl over 0.15 to 0.50, incl over 0.50 to 2.00, incl |
−0.005, +0.01 0.05 0.10 |
|
Chromium |
over 4.00 to 10.00, incl |
0.10 |
|
|
|
|
Nickel |
over 10.00 to 15.00, incl over 15.00 to 20.00, incl over 20.00 to 30.00, incl to 1.00, incl over 1.00 to 5.00, incl over 5.00 to 10.00, incl over 10.00 to 20.00, incl over 20.00 to 30.00, incl |
0.15 0.20 0.25 0.03 0.07 0.10 0.15 0.20 |
Nitrogen
Tungsten |
to 0.02, incl over 0.02 to 0.19, incl over 0.19 to 0.25, incl over 0.25 to 0.35, incl over 0.35 to 0.45, incl over 0.45 to 0.55, incl to 1.00, incl over 1.00 to 2.00, incl |
0.005 0.01 0.02 0.03 0.04 0.05 0.03 0.05 |
|
Molybdenum |
over 0.20 to 0.60, incl over 0.60 to 2.00, incl over 2.00 to 8.00, incl |
0.03 0.05 0.10 |
Vanadium
Selenium |
to 0.50, incl over 0.50 to 1.50, incl all |
0.03 0.05 0.03 |
*This table does not apply to heat analysis.
*Product analysis limits for cobalt under 0.05 % have not been established, and the manufacturer should be consulted for those limits.
