Tool and Die Steel O1 Bars

Rashid Metals in Muscat, Oman supplies Tool and Die Steel O1 Bars that are built for professionals who demand precision, consistency and real-world durability. These bars are trusted in industries where cutting, shaping and forming must happen with absolute accuracy. O1 Steel is known for its toughness and reliable hardening ability, and Rashid Metals ensures each bar reflects honest craftsmanship and strict quality control. Their O1 Bars perform steadily under pressure, making them a dependable choice for toolmakers, machinists and engineers who create equipment that must remain sharp, strong and stable through intense, repetitive operations.

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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 are made from a balanced mix of high carbon and chromium, giving them excellent hardenability and impressive wear resistance. The steel provides strong tensile strength, stable hardness and good dimensional stability after heat treatment. O1 Bars offer high edge retention, making them ideal for sharp tools and dies that undergo continuous stress. Their toughness, machinability and uniform mechanical response make them dependable for shaping, cutting and forming applications. Overall, the composition supports a powerful blend of strength, durability and precision.

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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 are widely used in industries that require long lasting, high precision tools. They are perfect for making cutting dies, punches, shear blades, reamers, knives and forming tools. Machinists rely on O1 Bars for tools that need a sharp, stable edge and consistent performance under repetitive impact. Manufacturing workshops use them to create molds, gauges, industrial knives and machine parts that must resist wear and deformation. Their dependable strength and heat treatability make O1 Bars a top choice for toolrooms, metalworking shops and engineering sectors where reliability is non negotiable.

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