stainless steel flat bar

What is stainless steel flat bar?

Stainless steel flat steel is rectangular steel with slightly pure edges. Stainless steel flat bars can be semi-finished steel. There are cold drawn polished stainless steel flat steel and hot rolled acid white sandblasted stainless steel flat steel.
Stainless steel flat steel can be composed of various stress components according to the different needs of the structure, and can also be used as a connector between components. Widely used in various building structures and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks and warehouse shelves, etc.
Stainless steel flat steel is used in construction projects as bridges, house frames, fences, power transmission ships, vehicles, etc. The raw material billet for the production of stainless steel flat steel is low-carbon square steel billet, and the finished stainless steel flat steel is delivered in hot-rolled, cold-rolled or hot-rolled state. During the transaction, the side width and side thickness of the stainless steel flat steel should be fully filled in the contract and other documents, as well as other main process items, such as annealing, solid solution, etc.

The production process of stainless steel flat bar

Embryo - Heating - Phosphorus removal - Rough rolling - Finishing rolling - Controlled cooling - Straightening - Edge cutting - Head and tail cutting - Heat treatment - Quenching - Cold straightening - Flattening - Pickling - Grinding - Marking and packaging

Product specifications of stainless steel flat bar

SPECIFICATIONS	ALLOWABLE DEVIATION
20x3~12mm(4/5" x 1/8"~12/25")	WIDTH≤50MM THICKNESS≤20MM THICKNESS DEVITION ± 0.4MM
25x3~15mm(1" x 1/8"~3/5")
30x3~16mm(1-1/5" x 1/8"~16/25")
35x3~16mm(1-2/5" x 1/8"~16/25")
40x3~16mm(1-3/5" x 1/8"~16/25")
45x4~16mm(1-4/5" x 4/25"~16/25")
50x4~16mm(2" x 4/25"~16/25")	1.WIDTH≤50MM THICKNESS DEVITION ± 0.8MM 2.50<WIDTH≤75MM WIDTH DEVIATION ± 1.2MM 3.75<WIDTH≤150MM WIDTH DEVIATION ± 1.5MM
60x4~16mm(2-2/5" x 4/25"~16/25")
65x4~16mm(2-3/5" x 4/25"~16/25")
70x5~16mm(2-4/5" x 4/25"~16/25")
75x5~16mm(3" x 1/5"~16/25")
80x5~16mm(3-1/5" x 1/5"~16/25")
90x5~16mm(3-1/2" x 1/5"~16/25")
100x5~18mm(4" x 1/5"~7/10")

Chemical composition of stainless steel flat bar

Chemical Properties of Frequently-used Stainless Steel Material Grade
UNS	ASTM	EN	JIS	C%	Mn%	P%	S%	Si%	Cr%	Ni%	Mo%
S20100	201	1.4372	SUS201	≤0.15	5.5-7.5	≤0.06	≤0.03	≤1.00	16.0-18.0	3.5-5.5	-
S20200	202	1.4373	SUS202	≤0.15	7.5-10.0	≤0.06	≤0.03	≤1.00	17.0-19.0	4.0-6.0	-
S30100	301	1.4319	SUS301	≤0.15	≤2.00	≤0.045	≤0.03	≤1.00	16.0-18.0	6.0-8.0	-
S30400	304	1.4301	SUS304	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	18.0-20.0	8.0-10.5	-
S30403	304L	1.4306	SUS304L	≤0.03	≤2.00	≤0.045	≤0.03	≤0.75	18.0-20.0	8.0-12.0	-
S30908	309S	1.4833	SUS309S	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	22.0-24.0	12.0-15.0	-
S31008	310S	1.4845	SUS310S	≤0.08	≤2.00	≤0.045	≤0.03	≤1.50	24.0-26.0	19.0-22.0	-
S31600	316	1.4401	SUS316	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	16.0-18.0	10.0-14.0	2.0-3.0
S31603	316L	1.4404	SUS316L	≤0.03	≤2.00	≤0.045	≤0.03	≤0.75	16.0-18.0	10.0-14.0	2.0-3.0
S31703	317L	1.4438	SUS317L	≤0.03	≤2.00	≤0.045	≤0.03	≤0.75	18.0-20.0	11.0-15.0	3.0-4.0
S32100	321	1.4541	SUS321	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	17.0-19.0	9.0-12.0	-
S34700	347	1.455	SUS347	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	17.0-19.0	9.0-13.0	-
S40500	405	1.4002	SUS405	≤0.08	≤1.00	≤0.04	≤0.03	≤1.00	11.5-14.5	≤0.60	-
S40900	409	1.4512	SUS409	≤0.08	≤1.00	≤0.045	≤0.03	≤1.00	10.5-11.75	≤0.50	-
S43000	430	1.4016	SUS430	≤0.12	≤1.00	≤0.040	≤0.03	≤0.75	16.0-18.0	≤0.60	-
S43400	434	1.4113	SUS434	≤0.12	≤1.00	≤0.040	≤0.03	≤1.00	16.0-18.0	-	-
S44400	444	1.4521	SUS444L	≤0.025	≤1.00	≤0.045	≤0.03	≤1.00	17.5-19.5	≤1.00	-
S40300	403	-	SUS403	≤0.15	5.5-7.5	≤0.04	≤0.03	≤0.50	11.5-13.0	≤0.60	-
S410000	410	1.40006	SUS410	≤0.15	≤1.00	≤0.035	≤0.03	≤1.00	11.5-13.5	≤0.60	≤1.00
S42000	420	1.4021	SUS420J1	0.16~0.25	≤1.00	≤0.04	≤0.03	≤1.00	12.0-14.0	≤0.75	≤1.00
S440A	440A	1.4028	SUS440A	0.60~0.75	≤1.00	≤0.04	≤0.03	≤1.00	16.0-18.0	-	≤0.75
S32750	SAD2507	1.441		≤0.03	≤1.2	≤0.035	≤0.02	≤0.80	24.0-26.0	6.0-8.0	3.0-5.0
S31803	SAF2205	1.4462		≤0.03	≤2.0	≤0.03	≤0.02	≤1.00	21.0-23.0	4.0-6.5	2.5-3.5
N08904	904L	1.4539		≤0.0.3	≤2.0	≤0.035	≤0.03	≤1.00	18.0-20.0	23.0-25.0	3.0-4.0

Mechanical property of stainless steel flat bar

Grade	Standard	Yield Strength	Tensile Strength	Elongation %	Hardness	Hardness
Grade	Standard	Rp0.2 (N/mm²)	Rm (N/mm²)	Elongation %	(HV)	(HRB)
201	ASTM A240	≥ 275	≥ 520	≥ 35	≤ 260	≤ 101
202	ASTM A240	≥ 275	≥ 520	≥ 40	≤ 218	≤ 95
301	ASTM A240	≥ 205	≥ 520	≥ 40	≤ 200	≤ 90
304	ASTM A240	≥ 205	≥ 515	≥ 40	≤ 210	≤ 92
304L	ASTM A240	≥ 205	≥ 520	≥ 40	≤ 200	≤ 90
316L	ASTM A240	≥ 177	≥ 480	≥ 40	≤ 200	≤ 90
316Ti	ASTM A240	≥ 205	≥ 520	≥ 40	≤ 200	≤ 90
317L	ASTM A240	≥ 205	≥ 515	≥ 40	≤ 218	≤ 95
309S	ASTM A240	≥ 205	≥ 515	≥ 40	≤ 218	≤ 95
310S	ASTM A240	≥ 205	≥ 520	≥ 40	≤ 200	≤ 90
321	ASTM A240	≥ 205	≥ 520	≥ 40	≤ 200	≤ 90
347	ASTM A240	≥ 205	≥ 520	≥ 35	≤ 200	≤ 90
410S	ASTM A240	≥ 205	≥ 440	≥ 20	≤ 210	≤ 92
420J2	ASTM A240	≥ 225	≥ 540	≥ 18	≤ 180	≤ 80
430	ASTM A240	≥ 206	≥ 450	≥ 22	≤ 200	≤ 88
2205	ASTM A240	≥ 450	≥ 620	≥ 25	≤ 293	≤ 30
2507	ASTM A240	≥ 450	≥ 620	≥ 25	≤ 290	≤ 30
253 MA®	ASTM	≥ 310	≥ 600	≥ 40	≤ 217	≤ 95
254 SMO®	ASTM	≥ 300	≥ 650	≥ 35	≤ 223	≤ 96
654 SMO®	ASTM	≥ 430	≥ 750	≥ 40	≤ 250	≤ 100
904L	ASTM	≥ 216	≥ 490	≥ 35	–	≤ 90
UNS N08926	ASTM	≥ 295	≥ 650	≥ 35	–	≤ 100
UNS S17400	ASTM	≥ 725	≥ 930	≥ 10	–	–

Product specifications of stainless steel flat bar

Item		Stainless steel flat bar
Material		304,304L,309S,310S,316,316L,316Ti,317,317L,321,347H,201,202,405,409, 410,420,430,etc
Type		Round,square,hexagonal,flat,angle
Surface		Pickled,Black,Bright,Polishing,Blasting,etc
Specification	Round bar	Diameter: 3mm~800mm
	Angle bar	Size: 3mm20mm20mm~12mm100mm100mm
	Square bar	Size: 4mm4mm~100mm100mm
	Flat bar	Thickness: 2mm~100mm
		Width: 10mm~500mm
	Hexagonal	Size: 2mm~100mm
Quality test		we can offer MTC (mill test certificate)
MOQ		500 kilograms
Payment terms		L/C T/T (30%DEPOSIT)
Stock or not		enough stock
Packing		Bundled,wooden box for export standard package
Delivery time		7-15 dyas,or according to the order quantity or upon negotiation

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Application fields of stainless steel flat bar

stainless steel flat bar are mainly used in chemical, petrochemical, marine engineering, seawater pipelines, seawater desalination and other industries, nuclear engineering, paper and pulp industry

Oil and gas

Kuaima Steel provides a complete set of equipment and installations for drilling, transportation and storage in the oil and gas industry.

Energy

Kuaima Steel serves the entire service cycle of power generation and synchronous activities in design, construction, repair and maintenance.

Construction

Kuaima Steel provides comprehensive products and services for infrastructure, bridges, pipelines, etc.

Marine

Kuaima Steel is a trusted supplier for subsea to surface operations and shipbuilding operations.

We supply and export stainless steel flat bar in following countries

Malaysia, United Arab Emirates, Indonesia, Saudi Arabia, Iran, Qatar, India, China, United Kingdom, Singapore, Canada, Thailand, Korea, Turkey, Philippines, Egypt, Germany, Italy, Japan, Russia, Vietnam, Australia, South Africa , Portugal, Morocco, Costa Rica, Kazakhstan, Netherlands, Mexico, Brazil, France, Spain, Nigeria, Bangladesh, Kuwait, Iraq, Ukraine, Poland, Jordan, Romania, Oman, Hong Kong, Venezuela, Colombia, Norway, Chile, Te Trinidad and Tobago, Greece, Czech Republic, Belgium, Sri Lanka, Cyprus, Angola, Myanmar (Burma), United Kingdom, Canada, Korea, Thailand, Netherlands, Spain, Turkey, Australia, Mexico, Pakistan, Vietnam, Brazil, Philippines, France, Taiwan, Poland, South Africa, Russia, Nigeria, Kuwait, Czech Republic, Norway, Romania, Egypt, Oman, Sweden, Belgium, Hong Kong, Israel, Colombia, Switzerland, Denmark, Finland, Argentina, Venezuela, Peru, Ukraine , Chile, Bangladesh, Portugal, Ireland, Austria, Algeria, Greece, Iraq, New Zealand, Slovakia, Hungary, Kazakhstan, Slovenia, Lithuania, Serbia, Sri Lanka, Bahrain, Bulgaria, Morocco, Tunisia, Croatia, Jordan, Ecuador, Te Trinidad and Tobago, Estonia, Azerbaijan, Ghana, Lebanon, Cyprus, Dominican Republic, Latvia, Libya, Costa Rica, Cambodia, Macedonia (FYROM), Belarus, Jamaica, Palestine, Turkmenistan Belarus, Jamaica, Palestine, Turkmenistan Belarus, Jamaica, Palestine, Turkmenistan and other countries