Tool and Die Steel W1 Bars

Aiman Metals, based in Kuala Lumpur, Malaysia, has built a solid reputation as a reliable manufacturer and supplier of top-notch Tool and Die Steel W1 bars. Renowned for their precision and dependability, Aiman Metals meets international standards and serves a variety of industries that need durable, high-performance tool steels. W1 tool steel bars are particularly favored in applications that require outstanding hardness and wear resistance. With a commitment to quality control, competitive pricing, and prompt delivery, Aiman Metals offers both standard and tailored W1 steel bar solutions, supporting essential operations in tooling, die-making, and precision engineering across Malaysia and Southeast Asia.

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W1 Tool Steel Round Bar

Die Steel W1 Rods

W1 Tool and Die Steel Bar

What is Tool and Die Steel W1 Bars?

W1 tool steel is a water-hardening carbon steel that contains around 0.90–1.05% carbon, along with trace amounts of manganese (0.25–0.50%) and silicon (0.10–0.40%). Lacking significant alloying elements, it responds exceptionally well to heat treatment. W1 boasts impressive hardness (up to 65 HRC) and good compressive strength after being water-quenched. It also offers high wear resistance and decent machinability. However, its toughness is not as high as that of alloyed tool steels, making it susceptible to cracking under intense stress or thermal shock. It’s best utilized in simpler tooling applications where conditions can be controlled.

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Tool and Die Steel W1 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 W1 Bars

Element	Content (%)
C	0.70-1.50
Mn	0.10-0.40
Si	0.10-0.40
Cr	0.15
Ni	0.2
Mo	0.1
W	0.15
V	0.1
Cu	0.2
P	0.025
S	0.025

Mechanical Properties of Tool and Die Steel W1 Bars

Properties	Metric	Imperial
Tensile strength, ultimate	1680 MPa	244000 psi
Tensile strength, yield	1500 MPa	218000 psi
Poisson’s ratio (25°C)	0.27-0.30	0.27-0.30
Elongation at break	3.50%	3.50%
Bulk modulus	140 GPa	20300 ksi
Shear modulus	80.0 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-30458 ksi
Charpy impact, unnotched	86.0 J	63.4 ft-lb
Hardness, Brinell (converted from Rockwell C Hardness)	498	498
Hardness, Knoop (converted from Rockwell C Hardness)	558	558
Hardness, Rockwell C	50.0-51.0	50.0-51.0
Hardness, Vickers (converted from Rockwell C Hardness)	531	531
Machinability (based on AISI 1212 steel as 100% machinability)	40	40

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Physical Properties of Tool and Die Steel W1 Bars

Properties	Metric	Imperial
Density	7.83 g/cm³	0.283 lb/in³
Melting point	1435°C	2615°F

Thermal Properties of Tool and Die Steel W1 Bars

Properties		Conditions
Properties		T (ºC)	Treatment
Thermal expansion	10.4 x 10^-6/ºC	20-100	–
Thermal conductivity	48.3 x W/mK	100	–

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Tool and Die Steel W1 Bars Types

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Frequently Asked Questions (FAQ)

Are Tool and Die Steel W1 Bars Environmentally Friendly?

Tool and Die Steel W1 bars are recyclable, reducing environmental impact. However, their production involves energy-intensive processes. Sustainable practices can enhance their eco-friendliness, such as using recycled materials and cleaner manufacturing methods.

How Do Tool and Die Steel W1 Bars Resist Corrosion?

Tool and Die Steel W1 bars are not highly resistant to corrosion, as they are high-carbon steels. They can rust when exposed to moisture, requiring proper maintenance, such as coating or regular oiling, to prevent corrosion.

Can Tool and Die Steel W1 Bars Be Used For Structural Applications?

Tool and Die Steel W1 bars are not ideal for structural applications due to their high carbon content, which makes them brittle and less ductile. They are better suited for tools, dies, and cutting applications where hardness and wear resistance are crucial. For structural applications, steels with better toughness and strength, like carbon or alloy steels, are preferred.

Tool and Die Steel W1 Bars Uses

Tool and Die Steel W1 bars find extensive use in applications where high hardness and edge retention are crucial. Common applications include hand tools like taps, dies, reamers, drills, cutters, and engraving tools. W1 is also frequently used for punches, cutting tools, and basic forming dies. Thanks to its excellent wear resistance, it’s perfect for precision tools that need a sharp edge and stable shape. While it may not be the best choice for impact-heavy or high-temperature situations, W1 remains a cost-effective option for general-purpose tooling, especially in small-scale production or maintenance settings.

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