Stainless Steel Heat Treatment - Hiton Fittings Pvt. Ltd.

Grade	Heat Treat Type	Austenitizing/Solutioning Temperature, Minimum or Range, °F [°C]A	Cooling Media	Quenching Cool Below °F [°C]	Tempering Temperature, Minimum or Range, °F [°C]
Grade	Heat Treat Type		Cooling Media	Quenching Cool Below °F [°C]	Tempering Temperature, Minimum or Range, °F [°C]
Low Alloy Steels
F 1	anneal	1650 [900]	furnace cool	B	B
F 1	normalize and temper	1650 [900]	air cool	B	1150 [620]
F 2	anneal	1650 [900]	furnace cool	B	B
F 2	normalize and temper	1650 [900]	air cool	B	1150 [620]
F 5, F 5a	anneal	1750 [955]	furnace cool	B	B
F 5, F 5a	normalize and temper	1750 [955]	air cool	B	1250 [675]
F 9	anneal	1750 [955]	furnace cool	B	B
F 9	normalize and temper	1750 [955]	air cool	B	1250 [675]
F 10	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 91	normalize and temper	1900-1975 [1040-1080]	air cool	B	1350–1470 [730–800]
F 92	normalize and temper	1900-1975 [1040-1080]	air cool	B	1350–1470 [730–800]
F 122	normalize and temper	1900-1975 [1040-1080]	air cool	B	1350–1470 [730–800]
F 911	normalize and temper	1900-1975 [1040-1080]	air cool or liquid	B	1365–1435 [740-780]
F 11, Class 1, 2, 3	anneal	1650 [900]	furnace cool	B	B
F 11, Class 1, 2, 3	normalize and temper	1650 [900]	air cool	B	1150 [620]
F 12, Class 1, 2	anneal	1650 [900]	furnace cool	B	B
F 12, Class 1, 2	normalize and temper	1650 [900]	air cool	B	1150 [620]
F 21, F 3V, and F3VCb	anneal	1750 [955]	furnace cool	B	B
F 21, F 3V, and F3VCb	normalize and temper	1750 [955]	air cool	B	1250 [675]
F 22, Class 1, 3	anneal	1650 [900]	furnace cool	B	B
F 22, Class 1, 3	normalize and temper	1650 [900]	air cool	B	1250 [675]
F 22V	normalize and temper or	1650 [900]	air cool or liquid	B	1250 [675]
F 22V	quench and temper	1650 [900]	air cool or liquid	B	1250 [675]
F 23	normalize and temper	1900-1975 [1040-1080]	air cool	B	1350–1470 [730–800]
F 23	normalize and temper	1900-1975 [1040-1080]	accelerated cool	B	1350–1470 [730–800]
F 24	normalize and temper	1800-1975 [980-1080]	air cool	B	1350–1470 [730–800]
F 24	normalize and temper	1800-1975 [980-1080]	or liquid	B	1350–1470 [730–800]
FR	anneal	1750 [955]	furnace cool	B	B
	normalize	1750 [955]	air cool	B	B
	normalize and temper	1750 [955]	air cool	B	1250 [675]
F 36, Class 1	normalize and temper	1650 [900]	air cool	B	1100 [595]
F 36, Class 2	normalize and temper	1650 [900]	air cool	B	1100 [595]
	quench and temper	1650 [900]	accelerated air cool		1100 [595]
	quench and temper	1650 [900]	or liquid		1100 [595]
Martensitic Stainless Steels
F 6a Class 1	anneal	not specified	furnace cool	B	B
	normalize and temper	not specified	air cool	400 [205]	1325 [725]
	temper	not specified	B	B	1325 [725]
F 6a Class 2	anneal	not specified	furnace cool	B	B
	normalize and temper	not specified	air cool	400 [205]	1250 [675]
	temper	not specified	B	B	1250 [675]
F 6a Class 3	anneal	not specified	furnace cool	B	B
F 6a Class 3	normalize and temper	not specified	air cool	400 [205]	1100 [595]
F 6a Class 4	anneal	not specified	furnace cool	B	B
F 6a Class 4	normalize and temper	not specified	air cool	400 [205]	1000 [540]
F 6b	anneal	1750 [955]	furnace cool	B	B
F 6b	normalize and temper	1750 [955]	air cool	400 [205]	1150 [620]
F 6NM	normalize and temper	1850 [1010]	air cool	200 [95]	1040-1120 [560-600]
Ferritic Stainless Steels
F XM-27 Cb	anneal	1850 [1010]	furnace cool	B	B
F 429	anneal	1850 [1010]	furnace cool	B	B
F 430	anneal	not specified	furnace cool	B	B
Austenitic Stainless Steels
F 304	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 304H	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 304L	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 304N	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 304LN	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 309H	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 310	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 310H	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 310MoLN	solution treat and quench	1900–2010 [1050–1100]	liquid	500 [260]	B
F 316	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 316H	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 316L	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 316N	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 316LN	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 316Ti	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 317	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 317L	solution treat and quench	1900 [1040]	liquid	500 [260]	B
S31727	solution treat and quench	1975–2155 [1080–1180]	liquid	500 [260]	B
S32053	solution treat and quench	1975–2155 [1080–1180]	liquid	500 [260]	B
F 347	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 347H	solution treat and quench	2000 [1095]	liquid	500 [260]	B
F 347LN	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 348	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 348H	solution treat and quench	2000 [1095]	liquid	500 [260]	B
F 321	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 321H	solution treat and quench	2000 [1095]	liquid	500 [260]	B
F XM-11	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F XM-19	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 20	solution treat and quench	1700-1850 [925-1010]	liquid	500 [260]	B
F 44	solution treat and quench	2100 [1150]	liquid	500 [260]	B
F 45	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 46	solution treat and quench	2010-2140 [1100-1140]	liquid	500 [260]	B
F 47	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 48	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 49	solution treat and quench	2050 [1120]	liquid	500 [260]	B
F 56	solution treat and quench	2050-2160 [1120-1180]	liquid	500 [260]	B
F 58	solution treat and quench	2085 [1140]	liquid	500 [260]	B
F 62	solution treat and quench	2025 [1105]	liquid	500 [260]	B
F 63	solution treat and quench	1900 [1040]	liquid	500 [260]	B
F 64	solution treat and quench	2010-2140 [1100-1170]	liquid	500 [260]	B
F 904L	solution treat and quench	1920-2100 [1050-1150]	liquid	500 [260]	B
F70	solution treat and quench	1900 [1040]	liquidD	500 [260]	B
Ferritic-Austenitic Stainless Steels
F 50	solution treat and quench	1925 [1050]	liquid	500 [260]	B
F 51	solution treat and quench	1870 [1020]	liquid	500 [260]	B
F 52C			liquid	500 [260]	B
F 53	solution treat and quench	1880 [1025]	liquid	500 [260]	B
F 54	solution treat and quench	1920-2060 [1050-1125]	liquid	500 [260]	B
F 55	solution treat and quench	2010-2085 [1100-1140]	liquid	500 [260]	B
F 57	solution treat and quench	1940 [1060]	liquid	175 [80]	B
F 59	solution treat and quench	1975-2050 [1080-1120]	liquid	500 [260]	B
F 60	solution treat and quench	1870 [1020]	liquid	500 [260]	B
F 61	solution treat and quench	1920-2060 [1050-1125]	liquid	500 [260]	B
F 65	solution treat and quench	1830-2100 [1000-1150]	liquidD	500 [260]	B
F 66	solution treat and quench	1870–1975 [1020–1080]	liquid	500 [260]	B
F 67	solution treat and quench	1870–2050 [1020–1120]	liquid	500 [260]	B
F 68	solution treat and quench	1700–1920 [925–1050]	liquid	500 [260]	B
F 69	solution treat and quench	1870 [1020]	liquid	500 [260]	B
F 71	solution treat and quench	1925–2100 [1050–1150]	liquid	500 [260]	B