Tool and Die Steel A2 Bars

Rupal Metals, located in Delhi, India, has made a name for itself as a leading manufacturer and supplier of Tool and Die Steel A2 Bars, providing precision-engineered solutions for tough industrial needs. A2 tool steel is a versatile, air-hardening, cold work steel celebrated for its outstanding dimensional stability, solid wear resistance, and decent toughness. Rupal Metals guarantees top-notch quality by adhering to strict manufacturing standards, offering A2 bars in a variety of sizes and specifications to meet the unique needs of clients. Known for their durability and reliability, these bars excel in applications that demand consistent performance in both shaping and cutting processes, even under moderate impact conditions.

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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 Steel A2 Bars generally contain 1.0% Carbon, 5.0% Chromium, 1.0% Molybdenum, 1.0% Manganese, along with trace amounts of Vanadium. This blend creates a well-rounded mix of hardness, toughness, and wear resistance. After undergoing heat treatment, A2 reaches a hardness level of 57–62 HRC while maintaining excellent dimensional stability. Its tensile strength falls between 1500–1900 MPa. Thanks to its air-hardening properties, distortion during quenching is minimized, making it perfect for precision tooling. A2 steel is also easy to machine and can be polished with ease, which is a great advantage in die and mold applications.

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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 are widely utilized in cold work tooling applications where strength, wear resistance, and dimensional accuracy are crucial. They find common use in blanking and forming dies, punches, trimming dies, and gauges. The stability of A2 steel during heat treatment makes it an excellent choice for precision dies, shear blades, and cutting tools. It’s also well-suited for components in injection molds and master dies. In tool rooms and workshops, A2 bars are appreciated for their machinability and long tool life. Their unique combination of hardness and toughness allows them to perform reliably even under intermittent shock.

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