Stainless Steel 301 Square Tubes, UNS S30100 Square Tubes Supplier & Exporter

GENERAL PROPERTIES:-

Stainless steel grade 301 is a commonly available austenitic stainless with good corrosion resistance and elevated carbon to allow for cold working to a variety of tempers. It can be obtained in the 1/4 hard, 1/2 hard, and full hard.

APPLICATIONS:-

High strength and excellent corrosion resistance make Type 301 Stainless Steel useful for a wide variety of applications. Typical uses include:

• aircraft structural parts
• trailer bodies
• utensils
• architectural and automotive rim
• roof drainage products
• conveyor belts
• variety of industrial applications.

CORROSION RESISTANCE:-

• Good resistance in applications involving external exposure to mildly corrosive conditions at ambient temperatures.
• Resists outdoor, industrial, marine, and mild chemical environments
• susceptible to carbide precipitation during welding, which restricts its use in some applications
• Similar to resistance of Stainless Steel grade 304

HEAT RESISTANCE:-

• Can be exposed continuously without appreciable scaling to a max of 1600°F(871°C).
• Maximum exposure temperature is about 1450°F (788°C), for intermittent exposure
• Has an oxidation weight gain of 10mg/cm 2 in 1,000 hours, in temperatures over 1600°F (871°C).

HEAT TREATMENT:-

• Solution Treatment (Annealing) – Heat to 1010-1120°C and cool rapidly.
• Use low side of range for intermediate annealing.
• This grade cannot be hardened by thermal treatment.

COLD WORKING:-

• hardens at high rate, creating a very high strength from cold rolling and from roll forming.
• more difficult to work than other austenitic stainless steels, due to its high work hardening rate..
• strain-hardened austenitite steel undergoes partial transformation into martensitite steel during this process.
• severe cold deformation can still occur, due to residual ductility.
• Grade 301 becomes strongly magnetic when cold rolled.

WELDING:-

• must be annealed for maximum corrosion resistance
• more difficult to work than other austenitic stainless steels, due to its high work hardening rate..
• must be annealed for maximum corrosion resistance
• Welding and post weld annealing will both remove high strength induced by prior cold rolling.
• Spot welding is commonly used to assemble cold rolled 301 components..
• material will lose temper in the heat affected weld zone.

CHEMICAL PROPERTIES:

%		Cr	Ni	C	Si	Mn	P	S	N
301	Min:	16	6	-	-	-	-	-	-
	Max:	18	8	0.15	1.00	2.0	0.045	0.030	0.10

MECHANICAL PROPERTIES:

Grade/Temper	Tensile Strength ksi (min.)	Yield Strength 0.2% ksi (min.)	Elongation -% in 50 mm (min.)
301 1/4	125	75	25
301 1/2	150	110	18
301 Full Hard	185	140	9

PHYSICAL PROPERTIES:

Denstiy lbm/in3	Coefficient of Thermal Expansion (min/in)-°F			Electrical Resistivity mW-in						Thermal Conductivity BTU/hr-ft-°F	Melting Range
0.29	at 68 – 212°F	at 68 – 932°F	at 68 – 1450°F	at 68°°F	at 212°F	at 392°F	at 752°F	at 1112°F	at 1472°F	at 68 – 212°F	2550-2590°F
	9.2	10.4	10.9	28.3	30.7	33.8	39.4	43.7	47.6	9.4

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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