- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
Views: 43 Author: Site Editor Publish Time: 2023-03-31 Origin: Site
Pindee Pipe knows American Standard ASTM A312,but also another standard ASTM A358 are stainless steel materials with ASTM assignment having generally excellent corrosion resistance. Seamless A312 Stainless pipe, ASTM A312 in 304/304L and 316/316L.Some nickel grades are also supplied.Both of them are widely used materials for the piping industry and pipeline industry.Articles we mentioned before,we will find out the basic differences between ASTM A312 and ASTM A358.We supply other stainless steel materials, for examples 304H,316H,309/S,310/S,317/L,321/H,347/H,904L,330,254SMO,410. In duplex grades, we can supply 2205 and 2507.
The introductions ASTM A312 in Pindee Pipe
ASTM A312 or SA 312 is an American Standard material specification that includes seamless,welded,more heavily cold-worked austenitic stainless steel pipe.Frequently-used A312 pipes are designed for high-temperature and general corrosive service. Welded stainless pipe ASTM A312. 304/304L Stainless Steel and 316/316L Stainless Steel are the most widely used grade of A312 specification.
The introductions ASTM A358 in Pindee Pipe
ASTM A358 or SA 358 is a material EFW specification for electric fusion welded austenitic chromium-nickel stainless steel pipe. In different sizes and standards.A358 stainless steel materials are widely used in high-temperature and or corrosive service industrial applications.
Applications of A312 and A358 in Pindee Pipe
Specification A312 and A358 as stainless steel pipes are corrosion resistant,they are used here and there wide applications in harsh conditions. In corrosive environments, both A358 and A312 appear their durability.Moreover,they have good low-temperature resistance capability.
| ASTM A312 | ASTM A358 |
| ASTM A312 materials are manufactured by Seamless without welding, Automatic Welding without filler material, or heavy cold working | ASTM A358 materials are manufactured by fusion welding using single-welded or double-welded butt joints. |
| A312 Stainless Steel Seamless pipes materials have different grades and no sub-classes. | Depending on the type of welding, filler material requirement, and radiographic requirements they have 5 sub-classes within A358. They are designated as class 1 to class 5 and must be mentioned while ordering. |
| A312 material conforms to the requirements furnished in Specification A999 | While A358 SS pipes conform to the requirements provided in A240. |
| Seamless A312 SS pipes are usually costly. | A358 pipes are usually cheaper. |
| In general A312 pipes are manufactured for a size up to 30 inches | A358 pipes are usually manufactured up to a size of 48 inches |
The table shows the chemical composition of the most common grades of stainless steel pipes under the ASTM A312-ASME SA312 specification:
| STAINLESS STEEL PIPE GRADES CHART (ASTM A312) | ||||||||||||
| SS Pipes Grade | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N |
| TP304 | S3040 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | ||||
| TP304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-13.0 | ||||
| TP304H | S30409 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | ||||
| TP304N | S30451 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-18.0 | 0.10-0.16 | |||
| TP304LN | S30453 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-12.0 | 0.10-0.16 | |||
| TP309S | S30908 | 0.08 | 2 | 0.045 | 0.03 | 1 | 22.0-24.0 | 12.0-15.0 | 0.75 | |||
| TP309H | S30909 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 22.0-24.0 | 12.0-15.0 | ||||
| TP309Cb | S30940 | 0.08 | 2 | 0.045 | 0.03 | 1 | 22.0-24.0 | 12.0-16.0 | 0.75 | 10xC min | ||
| 1.10 max | ||||||||||||
| TP309HCb | S30941 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 22.0-24.0 | 12.0-16.0 | 0.75 | 10xC min | ||
| 1.10 max | ||||||||||||
| TP310S | S3108 | 0.08 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 19.0-22.0 | 0.75 | |||
| TP310H | S3109 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 19.0-22.0 | ||||
| TP310Cb | S31040 | 0.08 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 19.0-22.0 | 0.75 | 10xC min | ||
| 1.10 max | ||||||||||||
| TP310HCb | S31041 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 19.0-22.0 | 0.75 | 10xC min | ||
| 1.10 max | ||||||||||||
| TP316 | S3160 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |||
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | |||
| TP316H | S31609 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |||
| TP316Ti | S31635 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 5x | 0.1 | |
| (C-N) | ||||||||||||
| -0.7 | ||||||||||||
| TP316N | S31651 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 0.10-0.16 | ||
| TP316LN | S31653 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | 0.10-0.16 | ||
| TP317 | S3170 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 10.0-14.0 | 3.0-4.0 | |||
| TP317L | S31703 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | |||
| TP321 | S3210 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-12.0 | 0.1 | |||
| TP321H | S32109 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-12.0 | 0.1 | |||
| TP347 | S3470 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 | ||||
| TP347H | S34709 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 | ||||
| TP347LN | S34751 | 0.05-0.02 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 | 0.20- | 0.06-0.10 | ||
| 50 | ||||||||||||
| TP348 | S3480 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 | ||||
| TP348H | S34809 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 | ||||
A312 SS PIPES MECHANICAL PROPERTIES
| SS Pipes Grade ASTM A312/ASME SA312 | Tensile Strength N/mm2 (min) | Yield Strength N/mm2 (min) | Elongation % (min) |
| TP304 | 515 | 205 | 35 |
| TP304L | 485 | 170 | 35 |
| TP316 | 515 | 205 | 35 |
| TP316L | 485 | 170 | 35 |
| TP321 | OD < 17,1 mm – 515; | OD < 17,1 mm – 205; | 35 |
| OD > 17,1 mm – 485 | OD > 17,1 mm – 170 |
ASTM A312 PIPE DIMENSIONS
The standard stainless steel pipes dimensions are set by the ANSI ASME B36.19 specification.
Seamless SS pipes are available in the size range 1/8″ thru 24″, welded stainless pipes ASTM A312 are manufactured in the range 2″ thru 36″ (ASTM A312, ASTM A358, i.e. electric-fusion-welded austenitic chromium-nickel stainless steel pipe, or as rolled).
ASTM A312 PIPE WEIGHT
| Nominal Pipe Size | Outside Diameter | Stainless Steel Pipes Dimensions | |||||||||||
| Schedule 5S | Schedule 10S | Schedule 40S | Schedule 80S | ||||||||||
| (mm) | (Inch) | WT/WEIGHT | |||||||||||
| mm (in) | kg/m | mm (in) | kg/m | mm (in) | kg/m | mm (in) | kg/m | ||||||
| 1/8 | 10.3 | 0.405 | – | – | 1.25 (0.049) | 0.28 | 1.73 (0.068) | 0.37 | 2.42 (0.095) | 0.47 | |||
| 1/4 | 13.7 | 0.54 | – | – | 1.66 (0.065) | 0.49 | 2.24 (0.088) | 0.63 | 3.03 (0.119) | 0.8 | |||
| 3/8 | 17.2 | 0.675 | – | – | 1.66 (0.065) | 0.63 | 2.32 (0.091) | 0.85 | 3.20 (0.126) | 1.1 | |||
| 1/2 | 21.3 | 0.84 | 1.65 (0.065) | 0.81 | 2.11 (0.083) | 1 | 2.77 (0.109) | 1.27 | 3.74 (0.147) | 1.62 | |||
| 3/4 | 26.7 | 1.05 | 1.65 (0.065) | 1.02 | 2.11 (0.083) | 1.28 | 2.87 (0.113) | 1.68 | 3.92 (0.154) | 2.2 | |||
| 1 | 33.4 | 1.315 | 1.65 (0.065) | 1.3 | 2.77 (0.109) | 2.09 | 3.38 (0.133) | 2.5 | 4.55(0.179) | 3.24 | |||
| 1 1/4 | 42.2 | 1.66 | 1.65 (0.065) | 1.66 | 2.77 (0.109) | 2.69 | 3.56 (0.140) | 3.39 | 4.86 (0.191) | 4.47 | |||
| 1 1/2 | 48.3 | 1.9 | 1.65 (0.065) | 1.91 | 2.77 (0.109) | 3.11 | 3.69 (0.145) | 4.06 | 5.08 (0.200) | 5.41 | |||
| 2 | 60.3 | 2.375 | 1.65 (0.065) | 2.4 | 2.77 (0.109) | 3.93 | 3.92 (0.154) | 5.45 | 5.54 (0.218) | 7.49 | |||
| 2 1/2 | 73 | 2.875 | 2.11 (0.083) | 3.69 | 3.05 (0.120) | 5.26 | 5.16 (0.203) | 8.64 | 7.01 (0.276) | 11.4 | |||
| 3 | 88.9 | 3.5 | 2.11 (0.083) | 4.52 | 3.05 (0.120) | 6.46 | 5.49 (0.216) | 11.3 | 7.62 (0.300) | 15.3 | |||
| 3 1/2 | 101.6 | 4 | 2.11 (0.083) | 5.18 | 3.05 (0.120) | 7.41 | 5.74 (0.226) | 13.6 | 8.08 (0.318) | 18.6 | |||
| 4 | 114.3 | 4.5 | 2.11 (0.083) | 5.84 | 3.05 (0.120) | 8.37 | 6.02 (0.237) | 16.1 | 8.56 (0.337) | 22.3 | |||
| 5 | 141.3 | 5.563 | 2.77 (0.109) | 9.46 | 3.41 (0.134) | 11.6 | 6.56 (0.258) | 21.8 | 9.53 (0.375) | 31 | |||
| 6 | 168.3 | 6.625 | 2.77 (0.109) | 11.3 | 3.41 (0.134) | 13.9 | 7.12 (0.280) | 28.3 | 10.9 (0.432) | 42.6 | |||
| 8 | 219.1 | 8.625 | 2.77 (0.109) | 14.8 | 3.76 (0.148) | 20 | 8.18 (0.322) | 42.5 | 12.7 (0.500) | 64.6 | |||
| 10 | 273.1 | 10.75 | 3.41 (0.134) | 22.7 | 4.20 (0.165) | 27.8 | 9.28 (0.365) | 60.4 | 12.7 (0.500) | 81.5 | |||
| 12 | 323.9 | 12.75 | 3.97 (0.156) | 31.3 | 4.58 (0.180) | 36.1 | 9.53 (0.375) | 73.9 | 12.7 (0.500) | 97.4 | |||
A312 PIPE DIAMETER TOLERANCE
| NPS | ASTM A312/ASME SA312 OD Tolerance | |||
| + | – | |||
| inch | mm | inch | mm | |
| 1/8 to 1 1 /2 > 1 1 /2 to 4 > 4 to 8 > 8 to 18 > 18 to 26 > 26 to 34 > 34 to 48 | 1/64(0.015) 1/32(0.031) 1/16(0.062) 3/32(0.093) 1/8(0.125) 5/32(0.156) 3/16(0.187) | 0.4 0.8 1.6 2.4 3.2 4.0 4.8 | 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) | 0.8 0.8 0.8 0.8 0.8 0.8 0.8 |
A312 PIPE WALL THICKNESS TOLERANCE
The nominal wall thickness tolerance is +/- 12.5%
| NPS | ASTM A312/ASME SA312 WT Tolerance, % | |
| + | – | |
| 1/8-2 1 /2 | 20.0 | 12.5 |
| 3~18, t/D≤ 5% | 22.5 | 12.5 |
| 3~18, t/D> 5% | 15.0 | 12.5 |
| ≥ 20, welded | 17.5 | 12.5 |
| ≥ 20, seamless, t/D≤ 5% | 22.5 | 12.5 |
| ≥ 20, seamless, t/D> 5% | 15.0 | 12.5 |
