Alloy Steel F91 Bars

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Thabiso Steel, located in Cape Town, South Africa, has made a name for itself as a leading manufacturer and supplier of top-notch Alloy Steel F91 Bars. These bars are celebrated for their remarkable strength, durability, and ability to withstand high temperatures and corrosion. They’re crafted to meet the rigorous demands of industries like power generation, petrochemicals, and engineering. Thabiso Steel prides itself on precision manufacturing and strict adherence to international standards, offering Alloy Steel F91 Bars in a variety of sizes and finishes to cater to a wide range of industrial needs. Their dedication to quality, innovation, and customer satisfaction has solidified their reputation as a trusted player in the South African steel market.

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Alloy Steel F91 Round Bars

Alloy Steel F91 Bright Bars

Alloy Steel F91 Hex Bars

What is Alloy Steel F91 Bars?

Alloy Steel F91 Bars consist mainly of chromium (8-9.5%) and molybdenum (0.85-1.05%), to which vanadium, nickel, and manganese are added for high strength and corrosion resistance. Alloy Steel F91 Bars have very good mechanical properties, such as tensile strength of 585 MPa, yield strength of 415 MPa, and very good toughness even at elevated temperatures.

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Alloy Steel F91 Bars Specification

type

Alloy Steel ASTM A182 F91 Round Bars

Type

rod, square bar, Round bar, hexagon bar, flat bar, channel bar, angle bar, threaded bar

Standards

Alloy Steel ASTM A182 F91 , A479, A314, GB4226-84, GB/T1220-2007, JISG4311-91, JIS G4318-98, EN 10095-99, GB4226-84, EN10088-3-2005, JIS G3033-2005, etc

Surface

bright round bar, pickled round bar, black round bar

Package Details

Standard seaworthy package(wooden boxes package,pvc package, or other package)

Technique

Forged/Hot Rolled/Cold Drawn/Peeled

Range

Range – 3.17mm to 350mm dia

Diameter

5mm-500mm (Customized size is acceptable)

Length

1m-9m or according to the customer’s requirement

Alloy Steel F91 Bars Chemical Composition

Grade	C	Mn	P	S	Si	Ni	Ch	Mo	Cb	N
F91	0.08-0.12	0.30-0.60	0.020	0.010	0.20-0.50	0.40	8.0-9.5	0.85-1.05	0.06-0.10	0.03-0.07

Alloy Steel F91 Bars Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Rockwell B (HR B) max	Brinell (HB) max
F91	585	415	20	–	248 max

Alloy Steel F91 Bars Equivalent Grades

STANDARD	UNS	WERKSTOFF NR.
Alloy Steel F91	K90901	1.4903

If You Are Looking To Buy High Quality
Pipes, Sheet, Fittings and Flanges

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

Weight Chart of Alloy Steel F91 Bars

SHAPE	POUNDS PER FOOT
Round	D2 x 2.67
Hexagon	D2 x 2.945
Square	D2 x 3.4
Flat	Thickness (in.) x Width (in.) x 3.4

Top Manufacturer and Supplier of
Alloy Steel F91 Bars in Cape Town, South Africa

Alloy Steel F91 Bars are made from a blend of chromium, molybdenum, vanadium, carbon, and trace amounts of manganese, silicon, and nickel. This special alloy mix provides outstanding mechanical properties, such as high tensile strength, excellent creep resistance, and remarkable oxidation resistance at elevated temperatures. The bars are known for their exceptional hardness, toughness, and stability under pressure, making them perfect for high-stress, high-temperature environments where reliability and performance are crucial.

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Types of Alloy Steel F91 Bars

Alloy Steel F91 Hollow Bars

F91 Alloy Steel Forged Bars

Alloy Steel F91 Polished Bars

Alloy Steel F91 Rectangular Bar

Alloy Steel F91 Square Bars

F91 Alloy Steel Hex Bars

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Uses of Alloy Steel F91 Bars

These Alloy Steel F91 Bars find extensive use in power plants, refineries, and chemical processing industries, thanks to their strength and temperature resilience. They’re ideal for crafting boiler components, heat exchangers, pressure vessels, and piping systems that endure extreme thermal and mechanical stress. Moreover, these bars are utilized in turbine parts, steam lines, and superheater tubes, where long-lasting performance and corrosion resistance are essential. With their superior mechanical and thermal properties, Alloy Steel F91 Bars are vital for critical industrial and engineering applications around the globe.