UNS S30409 Square Tubes, SS 304H Square Tubes, AISI SS 304H Stainless Steel 304H Square Tubes Supplier, Manufacturer and Exporter in India
Din 1.4301 SS 304H Square Tubes, SS UNS S30409 Square Tubes, Stainless Steel 304H Square Tubes, 304H Stainless Steel 304H Square Tubes Suppliers in India.
GENERAL PROPERTIES
Alloy 304 is a T-300 series stainless steel austenitic, which has a minimum of 18% chromium and 8% nickel with a maximum of 0.08% carbon. It is the standard "18/8 stainless" that is commonly found in pans and cooking tools. Alloy 304 is the most versatile and widely used alloy in the stainless steel family. It may be used for a wide variety of home and commercial applications and exhibits excellent corrosion resistance, has a high ease of fabrication, outstanding formability, and tremendous strength. The austenitic stainless steels are also considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes. Due to its controlled carbon content of 0.04 to 0.10, Alloy 304H provides improved high temperature strength when exposed to temperatures above 800oF. Alloy 304H also has greater short term and long term creep strength than Alloy 304L at temperatures above 500oC and is more resistant to sensitization than Alloy 304L.
APPLICATIONS
Alloy 304H is often used as a material of construction up to about 1500oF. Some examples of applications that Alloy 304H is commonly used for includes:
- Most commonly used in petroleum refineries
- Boilers
- Heat exchangers
- Condensers
- Pipelines
- Cooling towers
- Steam exhausts
- Electric generation plants
- On occasion will be found in fertilizer and chemical plants
HEAT RESISTANCE
- Good oxidation resistance in intermittent service to 870O C and in continuous service to 920O C
- Continuous use of Alloy 304 in the 425-860°C range is not recommended if subsequent aqueous corrosion resistance is important
- Alloy 304H has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500°C and up to about 800°C
- Alloy 304H will become sensitized in the temperature range of 425-860°C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.
CORROSION RESISTANCE
- Resistance to corrosion in oxidizing environments is a result from the 18 to 19% chromium that the 304 alloys contain
- Resistance to moderately aggressive organic acids is a result from the 9 to 11% nickel that the 304 alloys contain
- At times, Alloy 304L may show a lower corrosion rate than the higher carbon Alloy 304; otherwise, the 304, 304L, and 304H alloys may be considered to perform uniformly in most corrosive environments.
WELDING CHARACTERISTICS
- Readily welded by most standard processes.
- May be necessary to anneal the plate after welding
- Annealing helps restore corrosion resistance lost by the sensitization.
PROCESSING - HOT FORMING
- Working tempertarues of 1652-2102 degrees F are recommended
- Material should be annealed at 1900 degrees F
- Material should be water quenched or or rapidly cooled
PROCESSING - COLD FORMING
- Alloy is quite ductile and forms easily
- Helps increase strength and hardness of alloy
- May leave alloy slightly magnetic
MACHINABILITY
- Subject to work hardening during deformation
- Subject to chip breaking
- Best results achieved through slower speed, heavier feeds, good lubrication, and sharp tooling
CHEMICAL PROPERTIES:
| % | Cr | Ni | C | Si | Mn | P | S | N |
|---|---|---|---|---|---|---|---|---|
| 304H | min: 18.0 max:20.0 |
min: 8.0 max: 10.5 |
min: 0.04 max:0.10 |
0.75 max |
2.0 max |
0.45 max |
0.03 max |
0.10 max |
MECHANICAL PROPERTIES:
| Grade | Tensile Strength ksi (min.) |
Yield Strength 0.2% Offset ksi (min.) |
Elongation - % in 50 mm (min.) |
Hardness (Brinell) MAX |
Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 304H | 75 | 30 | 40 | 201 | 92 |
PHYSICAL PROPERTIES:
| Denstiy lbm/in3 |
Coefficient of Thermal Expansion (min/in)-°F |
Thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | ||
|---|---|---|---|---|---|---|
| at 68 °F | at 68 – 212°F | at 68 – 1600°F | at 212°F | at 932°F | at 32 – 212°F | in tension (E) |
| 0.285 | 9.2 | 11.0 | 9.4 | 12.4 | 0.12 | 29 x 106 |
SQUARE TUBES PRODUCT OVERVIEW:-
| Stainless Steel Square Tube | |
|---|---|
| Thickness Range of Stainless Plate | 3/16″ THRU 4″ (LARGER SIZES AVAILABLE UPON REQUEST) |
| Grades | 202, 304/304L, 316/316L,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. Some nickel Alloy such as alloy 200/201, C276, Alloy 400, Alloy 600, Alloy 625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and others Titanium alloys and copper alloys are also available |
INVENTORY:-
- X = Stocked Item
- P = Call For availability square bar can be cut to size.
- Square bar can be polished per customer specifications.
- Square bar is stocked in Penn met 2000 for improved machinability.
| Size in Inches | Wt per Ft | Wt per 12′ | 303 | 304/L | 316/L | 416 |
|---|---|---|---|---|---|---|
| 3/16″ | 0.120 | 1.440 | X | X | X | P |
| 1/4″ | 0.210 | 2.52 | X | X | X | P |
| 5/16″ | 0.330 | 3.96 | X | X | X | X |
| 3/8″ | 0.480 | 5.76 | X | X | X | X |
| 7/16″ | 0.650 | 7.80 | X | X | X | X |
| 1/2″ | 0.850 | 10.20 | X | X | X | X |
| 9/16″ | 1.080 | 12.96 | X | X | X | X |
| 5/8″ | 1.330 | 15.96 | X | X | X | X |
| 3/4″ | 1.910 | 22.92 | X | X | X | X |
| 7/8″ | 2.610 | 31.32 | X | X | X | X |
| 1″ | 3.400 | 40.80 | X | X | X | X |
| 1-1/8″ | 4.310 | 51.72 | X | X | X | X |
| 1-1/4″ | 5.320 | 63.84 | X | X | X | X |
| 1-3/8″ | 6.400 | 76.80 | X | X | X | X |
| 1-1/2″ | 7.600 | 91.20 | X | X | X | X |
| 1-3/4″ | 10.400 | 124.80 | X | X | X | X |
| 2″ | 13.600 | 163.20 | X | X | X | X |
| 2-1/4″ | 17.200 | 206.40 | X | X | X | X |
| 2-1/2″ | 21.300 | 255.60 | X | X | X | X |
| 3″ | 30.63 | 367.56 | X | X | X | P |
| 4″ | 54.40 | 652.80 | X | X | X | P |
PROCESSING:-
Customers can select a number of processing options to produce stainless steel tubes to their exact specifications, reducing materiel costs, production time, scrap and internal handling.
| Long Product Processing Services Overview | |
|---|---|
| Square Tube Cutting | Products cut include Round Tube, Flat bar, Hex bar, Square bar, Tubing and Hollow Tube, Pipe, Angles, channels, Beams and Tees. Thickness range is 1/16″ to 28″ diameter |
| Square Tube Production Cutting | Penn Stainless can provide production cutting for product diameters up to 4″. We utilize Amanda Production Equipment to achieve these precision cuts with tight tolerances. |
| Square Tube Polishing | Products polished included all tubular products, with OD & ID polishing available, Round Tube, Square Tube, Hex & Flat bar, Angles, Uneven Leg Angles, beams, and other shapes. |
TOLERANCES FOR COLD AND HOT SQUARE TUBESS
COLD FINISHED SQUARE TUBES TOLERANCES:
| CF Tolerances | Plus | Minus |
|---|---|---|
| 1/8″ to 5/16″ (exclusive) | 0.000 | 0.002 |
| 5/16″ to 1/2″ (exclusive) | 0.000 | 0.003 |
| 1/2″ to 1″ (inclusive) | 0.000 | 0.004 |
| over 1″ to 2″ (inclusive) | 0.000 | 0.006 |
| over 2″ to 3″ (inclusive) | 0.000 | 0.008 |
COLD FINISHED SQUARE TUBES STRAIGHTNESS TOLERANCES:
CF: 1/16 inch in any 5 foot; but may not exceed 1/16 X (length in ft/5)
HOT FINISHED SQUARE TUBES TOLERANCES:
| HF Tolerances | Plus | Minus | Out of Sq |
|---|---|---|---|
| Over 7/8″ to 1″ (inclusive) | 0.009 | 0.009 | 0.013 |
| Over 1″ to 1-1/8″ (inclusive) | 0.010 | 0.010 | 0.015 |
| Over 1-1/8″ to 1-1/4″ (inclusive) | 0.011 | 0.011 | 0.016 |
| Over 1-1/4″ to 1-3/8″ (inclusive) | 0.012 | 0.012 | 0.018 |
| Over 1-3/8″ to 1-1/2″ (inclusive) | 0.014 | 0.014 | 0.021 |
| Over 1-1/2″ to 2″ (inclusive) | 1/64 | 1/64 | 0.023 |
HOT FINISHED SQUARE TUBES STRAIGHTNESS TOLERANCES:
HF: 1/8 inch in any 5 foot; but may not exceed 1/8 X (length in ft/5)
STAINLESS STEEL SQUARE TUBES SPECIFICATIONS:
| Stainless Steel Square Tube Specifications | |
|---|---|
| ASTM A276 | This specification encompasses cold-finished or hot-finished tubes, including rounds, squares, and hexagons, and hot-rolled or extruded shapes, such as angles, tees, and channels in the more commonly used types of stainless steels. |
| ASTM A479 | This specification includes cold and hot finished stainless steel tubes, including rounds, squares, and hexagons, and hot-rolled or extruded shapes such as angles, tees, and channels. |
| ASTM A484 | This specification includes wrought stainless steel tubes, shapes, forgings, and billets or other semi-finished materials, except wire, for forging. The materials are available in four types of conditions. |
| ASTM A582 | This specification includes cold or hot finished tubes, which are suitable for machining processes. This specification includes rounds, squares, and hexagons, from common types of stainless free-machining steels. |
| ASTM B473 | This specification includes nickel alloy bar & wire, which can be produced in a solution-annealed condition, stabilized-annealed condition, or annealed condition. |
We export our STAINLESS STEEL 304H SQUARE TUBES products to Western and Eastern Europe, Saudi Arabia, Bangladesh, United States, United Arab Emirates, Canada, Angola, Argentina, Austria, Azerbaijan, Pakistan, Peru, Chile, Spain, France, United Kingdom, Indonesia, Israel, Iran, Kuwait, Mexico, Malaysia, Nigeria, Serbia, Singapore, Taiwan, Chile, Venezuela, Ecuador, Netherlands, Brazil, Colombia, Ghana, Iran, Denmark, Poland, Australia, Afghanistan, Bahrain, Costa Rica, Egypt, Iraq, Jordan, South Korea, Kazakhstan, Sri Lanka, Lithuania, Norway, Oman, Philippines, Poland, Qatar, Russia, Vietnam, South Africa, Nigeria, Mexico, Turkey, Hungary, Algeria, Belarus, Belgium, Bhutan, Bolivia, Bulgaria, Croatia, Czech Republic, Estonia, Finland, Greece, Italy, Japan, Libya, Romania, Thailand, Trinidad & Tobago,Tunisia, Ukraine, Yemen, Hong Kong, Gabon, China, Portugal, Switzerland, New Zealand, Sweden, Slovakia, Kenya, Lebanon, Morocco, Mongolia etc. We are sure that we also can cover the requirements requested by your company you can email us at harshsteel@ymail.com for your instant requirements.
