Tool and Die Steel A2 Bars

Maduka Metals, a top-notch manufacturer and supplier located in Abuja, Nigeria, specializes in high-quality Tool and Die Steel A2 Bars that are crafted for exceptional toughness, wear resistance, and dimensional stability. These bars are meticulously produced to meet international standards, guaranteeing reliable performance in toolmaking and industrial machining tasks. Maduka Metals caters to a wide array of industries, including automotive, aerospace, and manufacturing, offering durable and high-performing steel solutions. Thanks to advanced heat treatment processes and rigorous quality control, the company ensures that each Tool and Die Steel A2 Bar provides outstanding hardness, machinability, and a long service life even in challenging environments.

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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?

The composition of Tool and Die Steel A2 Bars includes carbon (1.0%), chromium (5%), molybdenum (1.0%), manganese (1.0%), along with trace amounts of vanadium and silicon. This well-balanced mix results in excellent wear resistance, moderate corrosion resistance, and solid dimensional stability. Mechanically, A2 steel boasts a tensile strength of about 1000–1250 MPa in its annealed state and can reach a hardness of 57–62 HRC after heat treatment. It also offers superior toughness compared to D-series steels and maintains stability during air hardening, making it a perfect choice for precision tooling 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 industries that demand high-performance tooling materials. They are particularly suited for creating dies, punches, shear blades, trimming tools, and forming dies. In the automotive and aerospace sectors, A2 Bars are employed for components that need a blend of wear resistance and toughness. They are also essential in the production of molds, gauges, and knives that require sharp edges and precise dimensions. Furthermore, Tool and Die Steel A2 Bars are favored in cold-working and forming operations due to their excellent machinability, stability, and resistance to cracking under repeated impacts.

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