Flat Bar
Flat bars are long, flat metal strips with a rectangular cross-section. They typically measure between 3/16” and 3” wide and 1/8” to 8” thick. Flat bars are available in various materials, including steel, aluminum, stainless steel, brass, and copper. The specific grade of the metal affects the flat bar’s strength and durability.
Flat bars are widely used in construction and engineering due to their versatility. They serve a range of applications across various industries, including automotive and architecture.
Types of Flat Bars
There are two main types of flat bars: hot-rolled and cold-rolled.
- Hot-Rolled Flat Bars : These are made by rolling red-hot steel billets until they reach the desired width and thickness. The process can leave the edges slightly rounded due to the heat.
- Cold-Rolled Flat Bars : These are produced by passing hot-rolled stock through rollers at room temperature. This method provides more precise dimensions and fewer imperfections compared to hot-rolled flat bars.
Benefits of Flat Bars
Flat bars offer several advantages compared to other metal materials:
- Lightweight yet Strong: They provide reliable structural support without being overly heavy.
- Customizable: Flat bars can be easily cut or bent to fit specific needs, making them convenient for custom projects.
- Corrosion-Resistant: Many grades of flat bars resist corrosion, allowing them to withstand harsh weather conditions without rusting.
Flat bars are ideal for both home improvement and commercial construction projects due to their strength, light weight, and versatility.
What is a Flat Bar Used For?
Flat bars have a rectangular cross-section and are commonly used in:
- Supporting floor joists
- Braces and lintels
- Frameworks for gates and fencing
- Handrails
- Structural frames
- Brackets and support plates
Flat Bar Specification
| Dimensions | ASTM, ASME, API |
| Length Range | 2 meters to 7 meters (8 feet to 24 feet) |
| Size Range | 38×10 mm to 150×25 mm |
| Finish | Bright, Black, Polish |
| Form | Flat Bar |
| Condition | Cold Drawn & Polished, Cold Drawn, Centreless Ground & Polished |
| Other Services | Machining (CNC), Centreless Grinding (CG), Heat Treatment, Annealing, Pickling, Polish, Rolling, Forging, Cutting, Bending, Minor Fabrication |
| Flat Bars End Finish | Sheared, Bansaw Cut, Hot-Cut with Grinding, Water Jet Cutting |
Flat Bar Materials and Grades
| Stainless Steel Flat Bar | AISI 301, 302, 303, 304, 304L, 310, 316, 316L, 317, 321, 347, 410, 416, 420, 430, 431, F51, F53, F55, F44, UNS S21800, Alloy 20, 904L, PH13-8Mo, 17-4ph, 15-5ph, 17-7ph, PH15-7 Mo, 254Smo, Al-6XN, 654SMO, duplex 2205, duplex 2507, nitronic ferralium 255 |
| Carbon Steel Flat Bar | ASTM A105 / ASME SA105, ASTM A350 LF2, LTCS |
| Alloy Steel Flat Bar | AISI 4130, 4140, 4142, 4145, 4150, 4320, 4330, 4340, 4350, 4620, 4820, 6150, 8620, 8630, 8822, 9310, 52100, HY80, HY100, 9315, 300M, Nitralloy 135M, 17-22A, 42CrMoA, EN19, SAE 4140, EN24 |
| Nickel Alloy Flat Bar | Nickel 200, Nickel 201, Monel 400, Monel K-500, Hastelloy C-22, Hastelloy C-276, Hastelloy C-2000, Hastelloy B, Nimonic 75, Nimonic 90, Nimonic 80A, Inconel 600, Inconel 601, Inconel 617, Inconel 625, Inconel 718, Inconel 725, Inconel X-750, Incoloy 800, Incoloy 800H, Incoloy 800HT, Incoloy 825, Incoloy 926, Incoloy 890, Incoloy 925, Incoloy A-286, Udimet 500, Rene 41, Waspalloy, Invar 36, Invar 42, Stellite 6B, Kovar Alloy |
| Titanium Flat Bar | 6AL4V, Commercially Pure, Grade 2, Grade 7, Grade 12 |
| Aluminum Flat Bar | 2014, 2024, 2025, 2219, 2618, 3003, 5083, 6061, 7049, 7050, 7075, 7079, 7149, 7150, 7175 |
Flat Bar Sizes (All sizes in mm)
| Supplied in the sizes | |||||
|---|---|---|---|---|---|
| 30 x 8 | 30 x 10 | 30 x 12 | 30 x 16 | 30 x 20 | 30 x 25 |
| 32 x 6 | 32 x 8 | 32 x 10 | 32 x 12 | 32 x 16 | 32 x 20 |
| 32 x 25 | 32 x 30 | 40 x 6 | 40 x 8 | 40 x 10 | 40 x 12 |
| 40 x 16 | 40 x 20 | 40 x 25 | 40 x 30 | 40 x 32 | 50 x 6 |
| 50 x 8 | 50 x 10 | 50 x 12 | 50 x 16 | 50 x 20 | 50 x 25 |
| 50 x 30 | 50 x 32 | 50 x 40 | 65 x 6 | 65 x 8 | 65 x 10 |
| 65 x 12 | 65 x 16 | 65 x 20 | 65 x 25 | 65 x 32 | 65 x 40 |
| 65 x 50 | 75 x 6 | 75 x 8 | 75 x 10 | 75 x 12 | 75 x 16 |
| 75 x 20 | 75 x 25 | 75 x 32 | 75 x 40 | 75 x 50 | 100 x 6 |
| 100 x 8 | 100 x 10 | 100 x 12 | 100 x 16 | 100 x 20 | 100 x 25 |
| 100 x 32 | 100 x 40 | 100 x 50 | 100 x 65 | 125 x 10 | 125 x 12 |
| 125 x 16 | 125 x 20 | 125 x 25 | 125 x 32 | 125 x 40 | 125 x 50 |
| 125 x 65 | 150 x 10 | 150 x 12 | 150 x 16 | 150 x 20 | 150 x 25 |
| 150 x 32 | 150 x 40 | 150 x 50 | 150 x 65 | ||
| Heat Treatment | Soft Annealed | + A | Normalized | + N | Annealed for cold Shearing | + S |
| Hardening and Tempering | + V | Spheroidised Annealing | + BG | Isothermal Annealing | + I | |
| Solution Annealed | + AT | As Rolled | + AR | Spherodized Annealed | + AC | |
| Stress Relieved | + SR | Quenched and Tempered | + QT | Normalized and Tempered | + NT | |
| Quenched and Double Tempered | + QDT | Treated to obtain a range of hardness | + TH | Spheroidised Annealing | + GKZ | |
| Treated for ferrite-pearlite structure | + FP | |||||
| Flats rolled black bar tolerance | EN 10058 – 2003 | |||||
| 100% Ultra Sonic tested | ||||||
| 100% Crack tested | ||||||
| Radioactivity | Material free from radioactivity. Material not welded. Material free from mercury and toxic contamination. | |||||
| Anti-mix test | 100% through spark test | |||||
| Length | Upto 6200mm |
Types of Flat Bar
Stainless Steel Flat Bars
Alloy Steel Flat Bars
Carbon Steel Square Bars
Duplex Steel Flat Bars
Applications
Flat bars are versatile and used for various purposes, including:
- Structural support beams
- Architectural trim (window and door frames)
- Grills and gates for ventilation
- Foundations for projects like gazebos or sheds
- Welding and furniture making
- Decorative features like railings
Kaizen Steel Industries Export to
Burundi, Comoros, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Malawi, Mauritius, Mayotte, Mozambique, Reunion, Rwanda, Seychelles, Somalia, Tanzania, United Republic of Uganda, Zambia, Zimbabwe, Angola, Cameroon, Central African Republic, Chad, Congo (Brazzaville), Congo, Democratic Republic of the Equatorial Guinea, Gabon, Sao Tome and Principe, Algeria, Egypt, Libyan Arab Jamahiriya, Morroco, South Sudan, Sudan, Tunisia, Western Sahara, Botswana, Lesotho, Namibia, South Africa, Swaziland, Benin, Burkina Faso, Cape Verde, Cote d\\’Ivoire (Ivory Coast), Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Saint Helena, Senegal, Sierra Leone, Togo
Anguilla, Antigua and Barbuda, Aruba, Bahamas, Barbados, Bonaire, Saint Eustatius and Saba, British Virgin Islands, Cayman Islands, Cuba, Curaçao, Dominica, Dominican Republic, Grenada, Guadeloupe, Haiti, Jamaica, Martinique, Monserrat, Puerto Rico, Saint-Barthélemy, St. Kitts and Nevis, Saint Lucia, Saint Martin, Saint Vincent and the Grenadines, Sint Maarten, Trinidad and Tobago, Turks and Caicos Islands, Virgin Islands (US), Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands (Malvinas), French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela, Bermuda, Canada, Greenland, Saint Pierre and Miquelon, United States
Afghanistan, Armenia, Azerbaijan, Bangladesh, Bhutan, Brunei Darussalam, Cambodia, China, Georgia, Hong Kong, India, Indonesia, Japan, Kazakhstan, South Korea, Kyrgyzstan, Laos, Macao, Malaysia, Maldives, Mongolia, Myanmar (ex-Burma), Nepal, Phillipines, Singapore, Sri Lanka (ex-Ceilan), Taiwan, Tajikistan, Thailand, Timor Leste (West), Turkmenistan, Uzbekistan, Vietnam
Albania, Andorra, Belarus, Bosnia, Croatia, European Union, Faroe Islands, Gibraltar, Guerney and Alderney, Iceland, Jersey, Kosovo, Liechtenstein, Macedonia, Man, Island of Moldova, Monaco, Montenegro, Norway, Russia, San Marino, Serbia, Svalbard and Jan Mayen Islands, Switzerland, Turkey, Ukraine, Vatican City State (Holy See)
Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, United Kingdom
Bahrain, Iraq, Iran, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, United Arab Emirates, Yemen
