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Forged from low-alloy 1Cr 0.5Mo flange material, astm a182 f12 flanges are engineered for elevated-temperature and high-pressure service in power generation boilers, oil refineries, and steam process lines. The composition of the a182 f12 material, containing 0.80-1.25% Chromium and 0.44-0.65% Molybdenum, ensures exceptional thermal stability, anti-oxidation and rupture strength at temperatures up to 570°C. All the necessary forms and types of the a182 f12 flanges such as high-pressure astm a182 f12 weld neck flange, low-pressure f12 slip on flange and dead-end f12 blind flange are available within our stock according to ASME B16.5 and B16.47 production standards in Class 150-2500 Pressure Ratings. Produced in accordance with a182 f12 class 1 & class 2 standards, all sa182 f12 flanges are normalized and tempered to have definite a182 f12 properties corresponding to international f12 flange equivalents UNS K11562, Werkstoff 1.7335 (13CrMo4-5), and EN 10083-3.
Solitaire Overseasis a premier global manufacturer, stockist, and exporter of high-precision industrial forgings and piping components. We supply fully certified high-pressure piping solutions to international markets with 100% EN 10204 3.1 material test report traceability.
| Parameter | Specification |
|---|---|
|
Material |
ASTM A182 or ASME SA182 F12 Class 1 and Class 2, UNS K11562 and K11564 |
|
Dimension Standards |
ASME B16.5 for NPS 1/2 to 24, ASME B16.47 for larger weld neck and blind sizes, MSS SP 44 |
|
Pressure Class |
Class 150, 300, 600, 900, 1500, 2500 |
|
Facing |
Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
|
Types |
Weld neck, long weld neck, slip on, blind, spectacle blind, socket weld, RTJ |
|
Testing |
Hardness test, PMI, impact test on request, hydrostatic test on request |
|
Certification |
Mill Test Certificate EN 10204 3.1, 3.2 on request, third party inspection on request |
| Grade | C | Mn | P max | S max | Si | Cr | Mo |
|---|---|---|---|---|---|---|---|
|
F12 Class 1 |
0.05 to 0.15 |
0.30 to 0.60 |
0.045 |
0.045 |
0.50 max |
0.80 to 1.25 |
0.44 to 0.65 |
|
F12 Class 2 |
[from ASTM A182] |
[from ASTM A182] |
[from ASTM A182] |
[from ASTM A182] |
[from ASTM A182] |
[from ASTM A182] |
[from ASTM A182] |
| Property | Class 1 | Class 2 |
|---|---|---|
|
Tensile strength, min |
415 MPa (60 ksi) |
485 MPa (70 ksi) |
|
Yield strength, min |
220 MPa (32 ksi) |
275 MPa (40 ksi) |
|
Elongation, min |
20 percent |
20 percent |
|
Hardness |
121 to 174 HBW |
143 to 207 HBW |
| ASME/ANSI B16.5 | Temperature Range | ||||||
|---|---|---|---|---|---|---|---|
| Temp (°F) | (Class 150) | (Class 300) | (Class 400) | (Class 600) | (Class 900) | (Class 1500) | (Class 2500) |
|
-20 to 100 |
265 |
695 |
925 |
1390 |
2085 |
3470 |
5785 |
|
200 |
260 |
680 |
905 |
1360 |
2035 |
3395 |
5660 |
|
300 |
230 |
655 |
870 |
1305 |
1955 |
3260 |
5435 |
|
400 |
200 |
640 |
855 |
1280 |
1920 |
3200 |
5330 |
|
500 |
170 |
620 |
830 |
1245 |
1865 |
3105 |
5180 |
|
600 |
140 |
605 |
805 |
1210 |
1815 |
3025 |
5040 |
|
650 |
125 |
590 |
785 |
1175 |
1765 |
2940 |
4905 |
|
700 |
110 |
570 |
755 |
1135 |
1705 |
2840 |
4730 |
|
750 |
95 |
530 |
710 |
1065 |
1595 |
2660 |
4430 |
|
800 |
80 |
510 |
675 |
1015 |
1525 |
2540 |
4230 |
|
850 |
65 |
485 |
650 |
975 |
1460 |
2435 |
4060 |
|
900 |
50 |
450 |
600 |
900 |
1350 |
2245 |
3745 |
|
950 |
35 |
280 |
375 |
560 |
845 |
1405 |
2345 |
|
1000 |
20 |
165 |
220 |
330 |
495 |
825 |
1370 |
ASTM A182 Grade F12 low-alloy 1Cr 0.5Mo steel flanges are specified across severe-service industries requiring high thermal endurance and pressure containment:
Need certified F12 flanges for your project?
Contact Solitaire Overseas Todayfor live stock availability, competitive pricing, and global dispatch.
It is a low-alloy 1Cr 0.5Mo flange material (UNS K11562) engineered for elevated-temperature, high-pressure piping systems requiring robust creep resistance, thermal stability, and structural strength.
The difference lies in heat treatment and strength: a182 f12 class 2 flanges undergo normalizing-tempering to achieve higher tensile and yield strength than Class 1 annealed material.
ASTM A182 F12 features 1% Chromium, whereas F11 contains 1.25% Chromium; both offer similar temperature limits, but F11 provides slightly higher oxidation resistance under severe thermal stress.
The f12 flange equivalent standards include UNS K11562, Werkstoff 1.7335 (13CrMo4-5), BS 1503-620 Gr 27, EN 10083-3, and sa182 f12 flange designations across global piping codes.
Yes, post-weld heat treatment (PWHT) at 620°C–660°C is required for an astm a182 f12 weld neck flange to relieve residual stress and prevent thermal cracking in joints.
Configurations like the f12 slip on flange and f12 blind flange are available in Class 150 to 2500 ratings with Raised Face, Flat Face, and RTJ facings.
Solitaire Overseas is a trusted global stockist and exporter supplying certified ASTM A182 F12 Class 1 and Class 2 alloy steel flanges with 100% EN 10204 3.1 material test reports and immediate worldwide dispatch.
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