Tool and Die Steel O1 Bars

Neith Metals is a well-respected manufacturer and supplier located in Cairo, Egypt, specializing in top-notch Tool and Die Steel O1 Bars. These bars are celebrated for their outstanding dimensional stability and impressive wear resistance, making them perfect for precision toolmaking and die manufacturing. With cutting-edge facilities and a strong emphasis on quality control, Neith Metals guarantees that each product meets international standards for performance and reliability. Their dedication to exceptional craftsmanship and customer satisfaction has established them as a trusted provider of tool steels for demanding industrial and engineering applications.

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O1 Tool Steel Round Bar

Die Steel O1 Rods

O1 Tool and Die Steel Bar

What is Tool and Die Steel O1 Bars?

Tool and Die Steel O1 Bars primarily consist of carbon (0.85–1.00%), manganese (1.00–1.40%), chromium (0.40–0.60%), tungsten (0.40–0.60%), and vanadium (0.30%). This specific composition endows O1 steel with remarkable machinability, high hardness, and robust wear resistance. After undergoing proper heat treatment, O1 steel can reach a hardness of 57–62 HRC while maintaining good dimensional stability and compressive strength. Its blend of toughness and hardness makes it an excellent choice for general-purpose cold-work tooling applications that demand both accuracy and durability.

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Tool and Die Steel O1 Bars Specifications

Standard : ASTM A681, ASME SA681
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
Form : Round
Diameter : 10 mm ~ 900 mm
Size : 0.08 mm to 25.00 mm
Diameter Range : 0.040 mm – 12 mm (0.0016” – 0.4724”)
Application : Lathe Tools, Milling Cutter, Cutter Blades, Boring Tools, Twist drills, Milling Knives, Reamers, Taps, Metalcutting saws, Screw Cutting Tools, File Cutter’s Chissels, Drills, Hobs, Drill Bits, Tread cutting tools etc

Chemical Compositions of Tool and Die Steel O1 Bars

CHEMICAL PROPERTIES	O1 STEEL (%)
Carbon	0.85-1.00
Manganese	1.00-1.40
Silicon	0.50
Chromium	0.40-0.60
Nickel	0.30
Tungsten	0.40-0.60
Vanadium	0.30
Copper	0.25
Phosphorus	0.03
Sulfur	0.03

Mechanical Properties of Tool and Die Steel O1 Bars

MECHANICAL PROPERTIES	O1 STEEL (Imperial)
Tensile Strength	245000 psi
Yield Strength	218000 psi
Elongation at Break	0.00%
Modulus of Elasticity	31000 ksi
Hardness (Rockwell)	50
Hardness (Vickers)	517
Hardness (Knoop)	513

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Equivalent Grades of Tool and Die Steel O1 Bars

Country	USA	German	Japan
Standard	ASTM A681	DIN EN ISO 4957	JIS G4404
Grades	O1	1.2510/100MnCrW4	SKS3

Thermal Properties of Tool and Die Steel O1 Bars

Properties		Conditions
Properties		T (°C)	Treatment
Thermal expansion	10.6 x 10^-6/ºC	20-260	–

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Tool and Die Steel O1 Bars Types

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Frequently Asked Questions (FAQ)

What Factors Should Be Considered When Choosing Tool and Die Steel O1 Bars?

When choosing O1 tool and die steel bars, consider factors like hardness, wear resistance, machinability, heat treatment requirements, intended application (e.g., cutting, stamping), and cost-effectiveness for long-term use.

How Do Tool and Die Steel O1 Bars Resist Corrosion?

O1 tool and die steel bars have moderate resistance to corrosion due to their carbon content and alloy composition. However, they are not stainless and can rust without proper maintenance, such as coating or regular oiling.

Can Tool And Die Steel O1 Bars Be Welded?

O1 tool and die steel can be welded, but it's crucial to preheat and control cooling rates to prevent cracking. Post-welding heat treatment is recommended to restore its hardness and properties.

Tool and Die Steel O1 Bars Uses

Tool and Die Steel O1 Bars find extensive use in crafting precision dies, cutting tools, punches, gauges, and shear blades. They are also utilized in forming and blanking operations where a high surface finish and tight dimensional tolerances are essential. Thanks to their superb machinability and stability during heat treatment, O1 bars are favored for creating mold inserts, broaches, and reamers. Their versatility and dependability make them a go-to option for toolmakers and engineers in the automotive, aerospace, and metal fabrication sectors.

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