Tool and Die Steel A2 Bars

Starc Metals is a reliable manufacturer and supplier of Tool and Die Steel A2 Bars, proudly based in Canberra, Australia. Renowned for its commitment to quality and precision, Starc Metals offers top-notch A2 steel bars that adhere to international standards for strength, toughness, and wear resistance. With state-of-the-art production facilities and strict quality control measures, the company guarantees consistent performance and reliability in every product. Catering to a variety of industries, including automotive, manufacturing, and aerospace, Starc Metals provides durable, high-performance solutions for tooling and die applications, empowering clients to boost productivity, achieve accurate results, and prolong the lifespan of their industrial tools.

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Die Steel A2 Rods

A2 Tool Steel Round Bar

A2 Tool and Die Steel Bar

What is Tool and Die Steel A2 Bars?

Tool and Die Steel A2 Bars are air-hardening, high-carbon, and high-chromium tool steels celebrated for their outstanding toughness, wear resistance, and dimensional stability. Their typical composition features Carbon (0.95–1.05%), Chromium (4.75–5.50%), Manganese (0.60–1.00%), and Vanadium (0.80–1.20%). After heat treatment, A2 steel reaches hardness levels of 57–62 HRC, along with good machinability and resistance to distortion. This well-balanced mix of toughness and wear resistance makes it perfect for tools and dies that require precision, durability, and dependable performance under repeated stress and moderate-temperature conditions.

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Tool and Die Steel A2 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 A2 Bars

ASTM A681	C		Mn		P	S	Si		Cr		V		Mo
A2/T30102	0.95	1.05	0.40	1.00	0.03	0.03	0.10	0.50	4.75	5.50	0.15	0.50	0.90	1.40
DIN ISO 4957	C		Mn		P	S	Si		Cr		V		Mo
1.2363/X100CrMoV5	0.95	1.05	0.40	0.80	0.03	0.03	0.10	0.40	4.80	5.50	0.15	0.35	0.90	1.20
JIS G4404	C		Mn		P	S	Si		Cr		V		Mo
SKD12	0.95	1.05	0.40	0.80	0.03	0.03	0.10	0.40	4.80	5.50	0.15	0.35	0.90	1.20
BS 4659	C		Mn		P	S	Si		Cr		V		Mo
BA2	0.95	1.05	0.30	0.70	0.035	0.035	. . .	0.40	4.75	5.25	0.15	0.40	0.90	1.10

Mechanical Properties of Tool and Die Steel A2 Bars

Properties	Metric	Imperial
Hardness, Rockwell C (as air-hardened (63-65 HRC average), 60-62 HRC at 205°C, 59-61 HRC at 260°C, 58-60 HRC at 315°C, 57-59 HRC at 370°C and 425°C and 480°C, 56-58 HRC at 540°C, 50-52 HRC at 595°C, 42-44 HRC at 650°C)	64	64
Bulk modulus (typical for steels)	140 GPa	20300 ksi
Machinability (based on carbon tool steel)	65%	65%
Shear modulus	78.0 GPa	11300 ksi
Poisson’s ratio	0.27-0.30	0.27-0.30
Elastic modulus	190-210 GPa	27557-30457 ksi

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Equivalent Grades of Tool and Die Steel A2 Bars

Country	USA	German	Japan	British
Standard	ASTM A681	DIN EN ISO 4957	JIS G4404	BS 4659
Grades	A2/T30102	1.2363/X100CrMoV5	SKD12	BA2

Thermal Properties of Tool and Die Steel A2 Bars

Properties		Conditions
Properties		T (°C)	Treatment
Thermal expansion	10.7 x 10^-6/ºC	20-100	–

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Tool and Die Steel A2 Bars Types

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Frequently Asked Questions (FAQ)

What Is The Standard Annealing Temperature For Tool and Die Steel A2 Bars?

The standard annealing temperature for A2 tool and die steel bars is typically between 800°C to 850°C (1472°F to 1562°F), followed by slow cooling to relieve internal stresses and soften the material.

How Do Tool and Die Steel A2 Bars Resist Corrosion?

A2 tool and die steel bars resist corrosion through their high chromium content, forming a protective oxide layer that enhances resistance to rust and wear, especially in cold-work applications.

How Should Tool and Die Steel A2 Bars Be Stored?

Tool and die steel A2 bars should be stored in a dry, cool environment, away from moisture and corrosive elements. Ensure proper ventilation and avoid direct contact with the ground to prevent rust.

Tool and Die Steel A2 Bars Uses

Tool and Die Steel A2 Bars find extensive use in applications that require high wear resistance and toughness. They are commonly utilized for punches, dies, shear blades, stamping tools, and industrial knives. Additionally, they serve in cold work tooling, forming dies, and cutting instruments where dimensional stability and edge retention are crucial. The air-hardening property of A2 steel simplifies the heat treatment process while reducing the risk of warping, making it an excellent choice for precision toolmaking and industrial applications. Its blend of strength, toughness, and wear resistance ensures a longer tool life, enhanced efficiency, and consistent performance in demanding manufacturing settings.

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