STAINLESS STEEL SEAMLESS PIPES 321

Stainless Steel Seamless Pipes321

321 Stainless Steel Seamless pipes | SS 321 Seamless pipes | Exporter of comprehensive range 321 Stainless Steel Seamless pipes

STAINLESS STEEL SEAMLESS PIPES 321 manufacturer
Suppliers and Exporter of ASTM A312 TP321 STAINLESS STEEL SEAMLESS pipes 321 in India.

Suppliers and Exporters of ASTM A312 TP321 Stainless Steel Pipes in India.

317L 321 Stainless Steel Seamless Pipes Specification

Specifications : ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
Sizes (Seamless) : 1/2" NB - 24" NB
Sizes (ERW) : 1/2" NB - 24" NB
Sizes (EFW) : 6" NB - 100" NB
Wall Thickness available : Schedule 5S - Schedule XXS (heavier on request)
Other Materials Testing : NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.
Dimensions : All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.


321 (UNS S32100) is a standard austenitic 18/8 chromium nickel combination with the expansion of Titanium settling on it a brilliant decision in hoisted temperature situations.

The titanium balances out the material evacuating its helplessness to the impacts of inter granular consumption. 321 is consequently the stainless steel material of decision for applications in workplaces up to 9000 C.

A disadvantage of Type 321 is that the titanium does not exchange well over a high temperature circular segment, so it is not suggested as a welding consumable.

In such occurrences, 347 is the favored decision as the Niobium performs the same capacity as Titanium yet can be still exchanged over a high temperature circular segment. Sort 347 is in this way the consumable of decision for welding Grade 321.

The steel has astounding framing and welding qualities and superb sturdiness even at cryogenic temperatures. On the off chance that you are searching for a stainless steel to give imperviousness to inter granular erosion, 304L is the ordinary decision as it is an all the more regularly utilized and supplied steel.

Be that as it may, 321 is a vastly improved alternative in working temperature situations in overabundance of 5000 C and thusly have its own benefits.

Note that Type 321 does not clean well so it is not commonsense to utilize this material as nonessential compositional highlight.

Corrosion Resistance:

Alloy 321 stainless steel plate displays great general consumption resistance that is equivalent to 304. It was produced for utilization in the chromium carbide precipitation scope of 1800 – 1500°F (427 – 816°C) where un-settled combinations, for example, 304 are liable to inter granular assault.

The alloy can be utilized as a part of most weakened natural acids at moderate temperatures and in unadulterated phosphoric corrosive at lower temperatures and up to 10% weakened arrangements at lifted temperatures. Alloy 321 opposes poly-thionic corrosive anxiety consumption breaking in hydrocarbon administration. It can likewise be used in chloride or fluoride free acidic arrangements at moderate tempera

Fabrication Data:

Hot forming
Working temperatures of 2100 – 2300°F (1149 – 1260°C) are prescribed for fashioning, irritating and other hot working courses of action. Don't work this amalgam at temperatures underneath 1700°F (927°C). Material must be water extinguished or completely strengthened in the wake of attempting to re-accomplish most extreme erosion res

Cold forming
Quite ductile and forms easily.

Welding
Alloy 321 stainless steel plate can be promptly welded by most standard methodologies. A post weld heat treatment is redundant.

Machining
The frosty work solidifying rate of 321 stainless steel plate makes it less machine capable than 410 stainless steel, yet like 304.

Grade C Mn Si P S Cr Mo Ni N Other
321 min. max - 0.08 2.00 0.75 0.045 0.030 17.0 19.0 - 9.0 12.0 0.10 Ti=5(C+N) 0.70
321H min. max 0.04 0.10 2.00 0.75 0.045 0.030 17.0 19.0 - 9.0 12.0 - Ti=4(C+N) 0.70


Mechanical properties of 321 grade stainless steel:

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
321 515 205 40 95 217
321H 515 205 40 95 217
321H also has a requirement for a grain size of ASTM No 7 or coarser.


Physical properties of 321 grade stainless steel :

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
321 8027 193 16.6 17.2 18.6 16.1 22.2


Grade specifications for 321 grade stainless steel:

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
321 S32100 321S31 58B, 58C 1.4541 X6CrNiTi18-10 2337 SUS 321
321H S32109 321S51 - 1.4878 X10CrNiTi18-10 - SUS 321H
These comparisons are approximate only. The list is intended as a comparison of functionally similar material not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.


Pipe Type NB Sizes Sch 5 Sch 10 Sch 40 Sch 80 Sch 160
321 Stainless Steel Seamless Pipes 1/8″
321 Stainless Steel Seamless Pipes 1/4″
321 Stainless Steel Seamless Pipes 3/8″
321 Stainless Steel Seamless Pipes 1/2″
321 Stainless Steel Seamless Pipes 3/4″
321 Stainless Steel Seamless Pipes 1″
321 Stainless Steel Seamless Pipes 1 1/4″
321 Stainless Steel Seamless Pipes 1 1/2″
321 Stainless Steel Seamless Pipes 2″
321 Stainless Steel Seamless Pipes 2 1/2″
321 Stainless Steel Seamless Pipes 3″
321 Stainless Steel Seamless Pipes 4″
321 Stainless Steel Seamless Pipes 5″
321 Stainless Steel Seamless Pipes 6″


Composition:

Chemical Composition in Weight Percent per ASTM A240 for Cited Alloys
Element Type 317L Type 317LMN
Carbon 0.03 max 0.03 max
Manganese 2.00 2.00
Silicon 0.75 max 0.75 max
Chromium 18.00 - 20.00 17.00 - 20.00
Nickel 11.00 - 15.00 13.50 - 17.50
Molybdenum 3.00 - 4.00 4.00 - 5.00
Phosphorus 0.04 max 0.04 max
Sulfur 0.03 max 0.03 max
Nitrogen 0.10 max 0.10 - 0.20
Iron Balance Balance
UNS No. S31703 S31726


Mechanical Properties :

Minimum Mechanical Properties per ASTM A-240 for Cited Alloys
Property Alloy 317L Alloy 317LMN
Ultimate Tensile Strength, ksi (MPa) 75 (515) 80 (550)
0.2% Yield Strength, ksi (MPa) 30 (205) 35 (240)
% Elongation in 2″ (5.1 cm) 40 40
Hardness, Maximum 217BHN
UNS No. S31703 S31726


Physical Properties :

The physical property data which follows represent the iron-chromium-nickel-molybdenum class of stainless steels. For all practical purposes, the data are applicable to 317LMN and Alloy 317L stainless steels. All properties are at room temperature (68°F, 20°C) unless stated otherwise.

Density 0.29 8.0 lb/in3 g/cm3
Modulus of Elasticity 29•106 200 psi Gpa
Melting Range 2410 to 2550 1320 to 1400 ° F °C
Thermal Conductivity 68 to 212°F 20 to 100°C 100.8 14.6 Btu/ft2-hr-°F-in Watts/m- K
Coefficient of Thermal Expansion 77°F (25°C) to: 212°F (100°C) 932°F (500°C) 1832°F (1000°C) 9.2 (16.5) 10.1 (18.2) 10.8 (19.5) 10-6/°F (10-6/°C) 10-6/°F (10-6/°C) 10-6/°F (10-6/°C)
Specific Heat 0.11 0.46 Btu/lb-°F J/g-°K
Electrical Resistivity 31.1 0.79 µ-ohm-in µ-ohm-in
Magnetic Permeability Fully annealed 0.5″ plate 65% cold-worked 0.5″ plate 1.0028 1.0028 µ at H = 200 oe µ at H = 200 oe


Features :

• High strength

• Resistant to high mechanical stresses

• Resistant to high pressure

• Resistant to high temperature

• Good formability

• Reusable

Applications :

• Chemical Industry

• Oil and Gas Pipeline

• Heating

• Plumbing

• Water Supply Systems

• Oil & Gas Industry

• Power Plant

• Paper & Pulp Industry