Tool and Die Steel W1 Bars

Chuck Metals, a well-known manufacturer and supplier located in Singapore, Pulau Ujong, specializes in high-quality Tool and Die Steel W1 Bars designed for precision tooling and various general-purpose applications. With its high carbon content and impressive hardness potential, W1 water-hardening tool steel is a budget-friendly option for tools that need sharp edges and smooth finishes. Chuck Metals offers W1 bars in a range of diameters and lengths, either heat-treated or annealed, in accordance with ASTM A686 standards. Perfect for cold work and low-impact tasks, these bars are meticulously processed to ensure consistent quality, machinability, and wear resistance for demanding industrial applications.

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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?

Tool and Die Steel W1 Bars generally consist of 0.90–1.05% carbon, along with small quantities of manganese (0.20–0.40%), silicon (0.10–0.40%), and trace elements like sulfur and phosphorus. This straightforward carbon steel composition allows W1 to be water-hardened, achieving a hardness of up to 65 HRC. W1 bars demonstrate tensile strength ranging from 850–1200 MPa, showcasing excellent wear resistance and edge retention. However, they do have limited toughness and aren’t suitable for high-impact or high-temperature situations. W1 tool steel is highly machinable in its annealed state, making it perfect for creating sharp, precise cutting edges.

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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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Tool and Die Steel W1 Bars Uses

W1 tool and die steel bars are utilized mainly in creating cutting tools, dies, and molds because of their high hardness, wear resistance, and ability to maintain sharp edges, even at elevated temperatures. Such bars are extensively used in the production of tools, such as drill rods, reamers, taps, and punches. Furthermore, they find applications in the construction of small precision parts, like bearings and inserts, which have good abrasion resistance. High carbon content of the steel enables easy hardening and tempering, thus ideal for applications demanding precision and durability under stress and extreme working conditions.

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