Stainless Steel 330 Square Tube, UNS N08330 Square Tube Supplier & Exporter

GENERAL PROPERTIES:-

Alloy 330 is an austenitic, nickel-chromium-iron-silicon alloy that has outstanding resistance to oxidation and carburization up to 2200°F with high strength. The excellent resistance to oxidation and carburization is provided by the high nickel and chromium content of the alloy, further enhanced by its silicon content. Alloy 330's ultra high nickel content of 34 to 37% also provides high resistance to chloride stress corrosion cracking and embrittlement from the precipitation of sigma phase in most furnace atmospheres. Alloy 330 also has a low coefficient of expansion, excellent ductility, and high strength.

APPLICATIONS:-

Alloy 330 is extensively used in high temperature environments where resistance to the combined effects of thermal cycling and carburization is necessary. Applications include:

• Chemical and Petrochemical Processing: cracked ammonia components, petrochemical furnace parts, heat exchangers, flares, etc
• Thermal Processing: heat-treat furnace containers & compartments, high temperature fans, salt pots, etc
• Ore Processing: perlite system and equipment
• Power Generation: boiler fixtures, gas turbine components, etc

VALUE ADDED SERVICES:-

• Need a special length?
  • We can custom level 3/8″ thick x 72″ x 186″ from our plate line to reduce scrap
• Polish plate inventory available
  • We supply #4, #6, and #8 mirror finish
  • Special polishes available
• Plate processing
• Dynamic water jet cutting
• Plate shearing
• Saw cutting
• Plasma cutting and high quality plasma cutting
• Machine cut rings and discs

CORROSION RESISTANCE:

• Provides high level of corrosion resistance especially with regards to oxidation, carburization, and nitridation
• Has great oxidation resistance and resists scale formation up to about 2000°F due to its chromium and nickel content
• Excellent resistance to carburization due to its 34 to 37% nickel and silicon content
• Exhibits resistance to nitrogen containing atmospheres where the oxygen content is low
• High nickel content also makes it highly resistant to chloride stress corrosion cracking and sigma phase embrittlement

HARDENING:-

• Alloy 330 will not respond to heat treatment; will only harden upon cold work

MACHINABILITY:-

• Rigid mounts, sulfurized lubricants, positive feeds and slow speeds are recommended for machining grade 330 stainless steel.

WELDING:-

• Grade 330 stainless steel can be welded using GAW techniques.

HOT WORKING:-

• Hot working of grade 330 stainless steel can be performed at 1149 to 1177°C (2100 to 2150°F).

COLD WORKING:-

• It is difficult to perform cold working in grade 330 stainless steel as the steel has high strength and work hardening rate. However, this steel can be cold worked using strong forces.

ANEALING:-

• Grade 330 stainless steel can be annealed at 1121 to 1204°C (2050 to 2200°F).

HEMICAL PROPERTIES

Element	Average Nominal %
Chromium	18.00 – 22.00
Nickel	34.00 37.00
Carbon	0.08 Max
Silicon	1.00 – 1.50
Manganese	2.00 Max
Phosphorus	0.03 Max
Sulfur	0.03 Max
Copper	1.00 Max
Iron	Balance

MECHANICAL PROPERTIES:-

Tensile Strength – ksi (min.)	0.2% Offset Yield Strength – ksi (min.)	Elongation in 2 inches – % (min.)	Hardness – Rockwell B
70	30	30	90

PHTSICAL PROPERTIES:-

Density (lb. / cu. in.)	Specific Gravity	Specific Heat (Btu/lb Deg F – [32-212 Deg F])	Magnetic Permeability	Modulus of Elasticity Tension
0.289	7.99	0.11	1.02	28.5

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.

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