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Alloy steel envelopes several grades of alloys including many high and low steel grades. Depending on the content of alloyants present in the material, the Alloy Steel Fittings could be classified as low alloy steel or high alloy steel. For instance, the content of alloyants in Low AS Pipe Fittings ranges to about 8%. Contrary to low alloy grades, high alloy steels contain more than 8% alloyants. A high alloy steel typically consists of chromium content amounting to about 10% of its total weight, with the remaining content being Iron. Hence, the degree of enhanced mechanical property is much higher in High Alloy Steel Pipe Fittings as compared to low alloy steels. As the content of alloying increase, the properties become more prominent. One such property is its resistance to oxidation. This is a feature that has been attributed to the presence of a high content of chromium in the alloy. Chromium forms a passivated oxide layer on the surface of the fittings, thereby proving to be an effective barrier to corrosion. Though, the cost of using a High alloy steel fitting is slightly higher in comparison to its low alloy counterparts.
Typical applications of Alloy Steel Fittings include its use in industries such as piping systems, automobile, aerospace, railway as well as offshore and onshore structural engineering.
Alloying elements for a chrome-moly steel include chromium and molybdenum in significant amounts. Which is why Chromoly Pipe Fittings derive their names from the addition of these two elements. One such chrome-moly steel is 41xx steel, which belongs to the SAE family of steel grades. In addition to exhibiting an excellent strength to weight ratio, these fittings are considerably stronger and harder as compared to the conventional 1020 steel. However, Chromium Alloy Steel Buttweld Fittings are not easily welded. Steels of this variety require thermal treatment both pre and post welding to avoid cold cracking.
| Standard Specification : | Alloy Steel Fittings |
| Thickness: | View Our Thickness: Schedule 5S, SCH10, SCH20, SCH10, SCH20, SCH30, SCHTD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160. |
| Standard: | JIS B2313 Fittings, ANSI B16.9 Fittings, MSS-SP-43 Type A Fittings, MSS-SP-43 Type b Fittings, MSS-SP-43 Type B Fittings, ANSI B16.28 Fittings, JIS B2312 Fittings |
| Dimensions Class: | 2000#, 3000#, 6000#, 9000# |
| Alloy Steel Fittings Coating Faces : | Yellow Transparent, Oil Black Paint, Anti-rust Paint, Cold and Hot Dip Galvanized, Zinc Plated |
| Fitting Machining Equipment: | Bending machine, Pushing Machine, Sand-blasting machine, Press machine, electric bevelling machine etc |
| Rating Pressure: | Pressure Rating Of: 3000 LBS, 6000 LBS, 9000 LBS |
| Check Sizes: | (SMLS UPTO 24”) 1/2” TO 36” (Buttweld 8” TO 36” ) |
| Application: | Water Pipeline Industry Chemical Industry Nuclear Power Plant Natural Gas Industry Fabrication Industry Oil And Gas Industry |
| Products | Size |
| Annealed Alloy Steel Cups | 1/2'' NB to 14'' NB |
| Normalized Alloy Steel Stub Ends | 1/2'' NB to 14'' NB |
| Scm420 Chromoly Alloy Steel Socket Weld | Upto 2'' NB |
| 4142 Chromoly Alloy Steel Nipple | Upto 4'' |
| 4140 Low Alloy Steel Coupling | Upto 4''NB |
| Chromoly Alloy Steel Elbow | 1/2'' NB to 14'' NB |
| Cast Alloy Steel Reducer | 1'' NB to 14'' NB |
| Chromium Alloy Steel Tee | 1'' NB to 14'' NB |
| NPS | AS 90 Deg Elbows | AS 45 Deg Elbows | AS 180 Deg Return Long Radius | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Long Radius | Short Radius | 3R | Long Radius | 3R | STD | XS | ||||||||
| STD | XS | SCH. 160 | XXS | STD | XS | STD | XS | STD | XS | STD | XS | |||
| ½ | .18 | .25 | * | * | * | * | * | * | .09 | .19 | * | * | .35 | * |
| ¾ | .19 | .25 | * | * | * | * | * | * | .09 | .19 | * | * | .40 | .65 |
| 1 | .40 | .50 | .60 | .75 | .25 | * | * | * | 0.25 | .31 | * | * | .75 | 1.00 |
| 1¼ | .60 | .90 | 1.00 | 1.38 | .4 | * | * | * | 0.38 | .50 | * | * | 1.25 | 1.75 |
| 1½ | .90 | 1.15 | 1.80 | 1.50 | .56 | .75 | * | * | .40 | .69 | * | * | 1.88 | 2.39 |
| 2 | 1.60 | 2.20 | 3.25 | 3.50 | 1.00 | 1.50 | 3.00 | 4.00 | .81 | 1.19 | 1.5 | 2.1 | 3.23 | 4.40 |
| 2½ | 3.25 | 4.00 | 5.13 | 7.00 | 2.13 | 2.80 | 6.00 | 8.00 | 1.75 | 2.13 | 3.00 | 4.00 | 6.50 | 8.00 |
| 3 | 5.00 | 6.50 | 8.50 | 11.0 | 3.00 | 4.25 | 10.0 | 13.0 | 2.63 | 3.50 | 5.00 | 7.00 | 10.25 | 13.00 |
| 3½ | 6.75 | 8.35 | * | 16.0 | 4.50 | 6.00 | 13.0 | 18.0 | 3.50 | 4.50 | 7.00 | 9.00 | 13.00 | 16.75 |
| 4 | 9.00 | 13.5 | 18.0 | 20.0 | 6.25 | 8.50 | 18.0 | 25.0 | 4.50 | 6.10 | 9.00 | 13.0 | 18.5 | 25.0 |
| 5 | 15.0 | 22.0 | 32.0 | 36.0 | 9.60 | 14.0 | 29.0 | 43.0 | 7.50 | 10.7 | 15.0 | 22.0 | 30.0 | 44.0 |
| 6 | 24.5 | 35.0 | 57.0 | 65.0 | 18.0 | 23.0 | 45.0 | 70.0 | 12.0 | 17.5 | 23.0 | 35.0 | 50.0 | 70.0 |
| 8 | 50.0 | 71.0 | 120 | 118 | 34.0 | 47.5 | 90.0 | 140 | 23.0 | 35.0 | 45.0 | 70.0 | 95.0 | 142 |
| 10 | 88.0 | 107 | 260 | * | 58.0 | 70.0 | 159 | 218 | 43.0 | 53.0 | 80.0 | 109 | 117 | 215 |
| 12 | 125 | 160 | 450 | * | 80.0 | 104 | 233 | 310 | 62.0 | 84.0 | 117 | 155 | 230 | 320 |
| 14 | 160 | 205 | 572 | * | 105 | 140 | 298 | 400 | 80.0 | 100 | 149 | 200 | 325 | 400 |
| 16 | 206 | 276 | * | * | 132 | 174 | 390 | 520 | 100 | 135 | 195 | 260 | 412 | 550 |
| 18 | 260 | 340 | * | * | 167 | 219 | 495 | 660 | 126 | 167 | 248 | 330 | 510 | 690 |
| 20 | 320 | 420 | * | * | 210 | 275 | 610 | 810 | 160 | 206 | 305 | 405 | 640 | 830 |
| 22 | 394 | 520 | * | * | * | * | 735 | 980 | 197 | 260 | 368 | 490 | 787 | 1040 |
| 24 | 460 | 600 | * | * | 298 | 392 | 875 | 1170 | 238 | 300 | 438 | 585 | 890 | 1200 |
| 26 | 550 | 729 | * | – | – | – | 1030 | 1370 | 275 | 365 | 515 | 685 | – | – |
| 30 | 734 | 975 | – | – | – | – | 1370 | 1830 | 367 | 488 | 685 | 915 | – | – |
| 36 | 1062 | 1412 | – | – | – | – | 1970 | 2630 | 531 | 706 | 985 | 1315 | – | – |
WPB B,C,D,E, |
WPC C,D,E, | WP11 CL1 | WP11 CL2, | WP11 CL3 | WP22 CL1 | WP22 CL3 | WP5 CL1, | WP5 CL3 | |
|---|---|---|---|---|---|---|---|---|---|
| Carbon | 0.3 | 0.35 | 0.05–0.15 | 0.05–0.20 | 0.05–0.20 | 0.05–0.15 | 0.05–0.15 | 0.15 | 0.15 |
| Manganese | 0.29–1.06 | 0.29–1.06 | 0.30–0.60 | 0.30–0.80 | 0.30–0.80 | 0.30–0.60 | 0.30–0.60 | 0.30–0.60 | 0.30–0.60 |
| Phosporus | 0.05 | 0.05 | 0.03 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 |
| Sulfur | 0.058 | 0.058 | 0.03 | 0.04 | 0.04 | 0.04 | 0.04 | 0.03 | 0.03 |
| Silicon | 0.10 min | 0.10 min | 0.50–1.00 | 0.50–1.00 | 0.50–1.00 | 0.5 | 0.5 | 0.5 | 0.5 |
| Chromium | 0.4 | 0.4 | 1.00–1.50 | 1.00–1.50 | 1.00–1.50 | 1.90–2.60 | 1.90–2.60 | 4.0–6.0 | 4.0–6.0 |
| Molybdenum | 0.15 max | 0.15 max | 0.44–0.65 | 0.44–0.65 | 0.44–0.65 | 0.87–1.13 | 0.87–1.13 | 0.44–0.65 | 0.44–0.65 |
| Nickel | 0.4 | 0.4 | |||||||
| Copper | 0.4 | 0.4 | |||||||
| Others | Vanadium 0.08 | Vanadium 0.08 |
| Gr. | Tensile Strength, min. ksi[MPa] | Yield Strength, min. ksi[MPa] | Elongation, min. % | |
| Longitudinal | Transverse | |||
| WP1 | 55-80[380-550] | 30[205] | 20 | 13 |
| WP12 CL1 | 60[415] | 32[220] | 22 | 14 |
| WP12 CL2 | 70[485] | 40[275] | 22 | 14 |
| WP11 CL1 | 60[415] | 30[205] | 22 | 14 |
| WP11 CL2 | 70[485] | 40[275] | 22 | 14 |
| WP11 CL3 | 75[520] | 45[310] | 22 | 14 |
| WP22 CL1 | 60[415] | 30[205] | 22 | 14 |
| WP22 CL3 | 75[520] | 45[310] | 22 | 14 |
| WP24 | 85[585] | 60[415] | 20 | - |
| WP5 CL1 | 60[415] | 30[205] | 22 | 14 |
| WP5 CL3 | 75[520] | 45[310] | 22 | 14 |
| WP9 CL1 | 60[415] | 30[205] | 22 | 14 |
| WP9 CL3 | 75[520] | 45[310] | 22 | 14 |
| WPR | 63-99[435-605] | 46[315] | 20 | - |
| WP91 | 90[620] | 60[415] | 20 | 13 |
| WP911 | 90-120[620-840] | 64[440] | 20 | 13 |
| WP92 | 90-120[620-840] | 64[440] | 20 | 13 |
