Tool and Die Steel A2 Bars

Aiman Metals, based in Kuala lumpur, Malaysia, is a major manufacturer and supplier of tool and die steels and other product ranges. With a strong commitment to precision and excellence, Aiman Metals provides a diverse range designed to meet the needs of industries looking for robust and reliable materials. Among their products offered is A2 tool and die steel bars renowned for their exceptional wear resistance, toughness, and dimensional stability. Thus, they are perfect to use for the making of tools, dies, and punches within cold work applications. Quality is ensured by Aiman Metals, along with timely supply and excellent customer service.

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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 is an air-hardening, cold-work steel that shows very good wear resistance and dimensional stability. Carbon, between 1.0% to 1.2%, chromium at 5.0% to 5.5%, molybdenum at 1.0%, and vanadium at 0.3% to 0.4% serve as the core elements, plus small amounts of manganese, silicon, and sulfur. These contribute to the hardness and toughness and its ability to withstand high temperatures in forming. The mechanical properties of A2 steel include a tensile strength of 1,700-2,200 MPa, a hardness range of 57-62 HRC, and a good resistance to deformation and cracking, which makes A2 steel well suited for applications in tooling, such as dies, punches, and molds.

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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 specifically used for making cold work tools, dies, and molds. A2 steel is also known for its wear resistance, toughness, and dimensional stability characteristics, making it suitable for punching, blanking, and forming die fabrication. Its high strength along with significant abrasion resistance also aids in using it for cutting, drilling, and shaping tool applications. This is air-hardening and remains sharp on the edges, thus well-suited for applications related to precise tools and intricate designs. Applications such as gauges, blades, and fixture typically require durability and performance, and A2 steel bars are applied for that purpose.

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