DIN 1.4550 Schedule 40 Pipe SS347 Stainless Steel Seamless Pipe
Length 6m Custom Cutting as request
Specification ASTM A312 covers cold worked austenitic stainless
steel such as grade 347. Unlike some conventional steel alloys that
are hardened by the use of heat treatment, the hardening of
Stainless Steel 347 Seamless Pipe is achievable only via cold
working. Since cold working is a process that does not use heat,
there are some improvements in the overall aspects of the pipe.
Firstly, the surface finish of the SS 347 Welded Pipe is much
better, in addition to achieving properties such as better
reproducibility and interchangeability. Along with superior
dimensional control, the ASTM A312 TP 347 Square Pipe could be
imparted with directional properties as well. Secondly, problems
associated with contamination are eliminated by cold working the
material. Under this specification, every DIN 1.4550 schedule 40
pipe produced must undergo a series of tests including the weld
decay test, a nondestructive electric test, or a hydrostatic test,
grain size determination. Moreover, the SS UNS S34700 ERW Pipe is
required to undergo mechanical tests like a transverse test or
longitudinal tension test and flattening test, while also meeting
the tensile strength and yield strength requirements of the
specification.
Though like stainless steel 321, the SS 347H Rectangular Pipe is
used for its ability to withstand heat, it is a colombium
stabilized alloy, which gives it better mechanical properties.
Stainless Steel 347 Seamless Pipe Specification Table
| Size | ½” to 6” Nominal Bore Sch 40s, 10s, 160s, 80s |
| Stainless Steel 347 pipes Length | - Double Random Length 10 to 12 meter
- Single Random Length 5 to7 meter
|
| Wall Thickness | 0.1 to 60 milimeter |
| Standard | GB, ASTM, JIS, EN, GOST, AISI, DIN, ASME, AMS |
| Surface Finish | Bright, Cold Finish, Annealing, Polished, Pickling, or as per need |
| Stainless Steel 347 pipes Technique | Hot Rolled/ Cold Rolled |
| Stainless Steel 347 pipes Manufacturing Shapes | Square, Round, Box Section, Rectangle |
| Manufacturing types | Seamless, ERW, Welded, EFW |
| Inspection, Test Reports | PMI Test Reports, EN 10204 3.1, Mill Test Certificates, Mechanical
Reports, Chemical Reports, Visual Inspection Reports, NABL Approved
Lab Reports, Third Party Inspection, Destructive and Non
Destructive Test Reports |
| Manufacturing Technology | Cold / Hot Formed |
ASME SA 312 TP 347 Pipe Size Range In MM
- 347 Seamless pipes Size: 6NB - 1200NB
- OD: 1/8" - 12" NPS
- 347 Seamless pipes Thickness : 0.6 - 12.7 mm
- Length: Single, Double Random & Cut Length
Standard:
ASTM/ASME: UNS S34700 / S34709
EURONORM: FeMi35Cr20Cu4Mo2
DIN: 2.4660
| Grade | | Chemical Component % |
| C | Cr | Ni | Mn | P | S | Mo | Si | Cu | N | Other |
| 347 | 0Cr18Ni11Nb | ≤0.08 | 17.00-19.00 | 9.00-13.00 | ≤2.00 | ≤0.035 | ≤0.030 | - | ≤1.00 | - | - | Nb≥10*C% |
| 347H | * | 0.04-0.1 | 17.00-19.00 | 9.00-13.00 | ≤2.00 | ≤0.035 | ≤0.030 | - | ≤1.00 | - | - | Nb≥10*C% |
Mechanical Table Of SS 347 Pipe
| AISI | Tensile Strength minimum (MPa) | Yield Strength 0.2% Proof minimum (MPa) | Elongation minimum (% in 50mm) | Hardness |
| Rockwell B (HR B) maximum | Brinell (HB) maximum |
| 347 Seamless pipes | 515 | 205 | 40 | 95 | 201 |
Equivalent Grade Of A312 GR TP347 Seamless Pipe
| GRADE | UNS | WERKSTOFF NR. | JIS | AFNOR | BS | GOST | EN | SS |
| USA | GERMAN | JAPAN | RUSSIAN | BRITISH | RUSSIAN | EUROPE | SWEDISH |
| 347 Seamless pipes | S34700 | 1.4550 | - | - | - | - | X6CrNiNb18-10 | - |
