HT PIPE is supplier and manufactuter of ASTM A182 forged steel Flanges, we supply a wide range of steel flanges: wn flanges，sw flanges, so flanges, lwn flanges, threaded flanges, blind flanges, etc.
The neck height of the long weld neck flange is higher, it is produced according to ASME B16.5, the class can be 150# to 2500#. ASTM A182 grade F12 has Class 1 and Class 2 , Classes 1 and 2 may be given a heat treatment of 1200 °F [650 °C] minimum after final hot or cold forming.
ASTM A 182 F12 Long Welding Neck Flange Chemical Composition:
| Grade |
UNS |
C≤ |
Mn |
P≤ |
S≤ |
Si |
Ni |
Cr |
Mo |
F12
1.7335 |
Class 1 |
K11562 |
0.05-0.15 |
0.3-0.6 |
0.045 |
0.045 |
0.5max |
- |
0.8-1.25 |
0.44-0.65 |
| Class 2 |
K11564 |
0.1-0.2 |
0.3-0.8 |
0.04 |
0.04 |
0.1-0.6 |
- |
0.8-1.25 |
0.44-0.65 |
F12 LWN Flange Mechanical Properties:
| Mechanical properties |
Tensile, min, ksi[MPa] |
Yield, min, ksi[MPa] |
Elongation, %(min) |
Brinell Hardness
, HBW |
F12
1.7335 |
Class 1 |
60 [415] |
32 [220] |
20 |
121–174 |
| Class 2 |
70 [485] |
40 [275] |
20 |
143–207 |
| ASTM A182 /ASME SA182 |
Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service |
| Low alloy Steels |
F1 |
F2 |
F5， F5a |
F5 |
F91 |
| F92 |
F911 |
F11, 1、2、3 |
F12, 1、2 |
F36 |
| F21, F3V, F3VCb |
F22, 1/3/V |
F23 |
F24 |
FR |
| F122 |
F10 |
F9 |
|
|
| Martensitic and Ferritic Stainless steel |
F6a |
F6b |
F6NM |
F XM-27Cb |
F429 |
| F430 |
|
|
|
|
| Austenitic Stainless steel |
F304 |
F304H |
F304L |
F304N |
F304LN |
| F309H |
F310 |
F310H |
F310MoLN |
F316 |
| F316H |
F316L |
F316N |
F316LN |
F316Ti |
| F317 |
S31727 |
S32503 |
F321 |
F321H |
| F347 |
F347H |
F347LN |
F348 |
F348H |
| FXM-11 |
FXM-19 |
F20 |
F44 |
F45 |
| F46 |
F47 |
F48 |
F49 |
F56 |
| F58 |
F62 |
F63 |
F64 |
F904L |
| Ferritic-Austenitic Stainless steel |
F 50 |
F 51 |
F 52 |
F 53 |
F 54 |
| F 55 |
F 56 |
F 57 |
F 58 |
F 59 |
| F60 |
F61 |
F65 |
F65 |
F67 |
| Product Form |
| ASME B16.5 |
Size:1/2"-24" Wall thickness:SCH5S-SCHXXS Class:150-1500# |
| ASME B16.47 |
Size:26"-48" Wall thickness:SCH5S-SCHXXS Class:150-1500# |
| ASME B16.48 |
Size:1/2"-24" Wall thickness:SCH5S-SCHXXS Class:150-1500# |
| MSS SP-44 |
Size:12"-60" Wall thickness:SCH5S-SCHXXS Class:150-1500# |
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