Tool and Die Steel O1 Bars

Aung Metals, a reputable manufacturer and supplier located in Naypyidaw, Myanmar, specializes in high-quality Tool and Die Steel O1 Bars that are crafted for precision tooling and exceptional performance. These oil-hardening tool steels are celebrated for their remarkable dimensional stability and wear resistance, making them a go-to choice in industries that demand fine cutting and forming tools. Aung Metals takes pride in ensuring that every O1 Bar is made from top-notch raw materials and cutting-edge processing techniques, all in line with international standards. The Tool and Die Steel O1 Bars from Aung Metals provide outstanding machinability, hardness, and toughness, making them perfect for high-precision industrial and engineering tasks.

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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?

The composition of Tool and Die Steel O1 Bars includes carbon, chromium, manganese, tungsten, and vanadium, which together create a well-rounded mix of hardness, strength, and toughness. Thanks to the oil-hardening process, these bars experience minimal distortion during heat treatment. On a mechanical level, O1 Bars boast excellent wear resistance, solid compressive strength, and dependable edge retention. Their fine grain structure contributes to a superior surface finish and precision, making them ideal for high-accuracy tooling and die-making processes.

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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

These O1 Bars are extensively used in the production of cutting tools, punches, dies, reamers, gauges, and shear blades that require high dimensional stability and sharpness. They excel in cold work applications like stamping, forming, and trimming, where wear resistance and toughness are essential. Industries such as automotive, aerospace, and general engineering depend on O1 Bars to create precision tools that deliver consistent performance and a long service life. Their perfect balance of machinability and hardness makes them a favored choice among toolmakers around the globe.

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