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A2 Tool Steel is a versatile, air-hardening cold-work tool steel that provides a balanced combination of wear resistance and toughness. Its air-hardening property minimizes distortion during heat treatment, making it ideal for precision parts. A2 steel angles and channels are widely used for manufacturing dies, punches, and forming tools that require dimensional stability. The material offers high hardness while maintaining excellent machinability. It is a preferred choice for tools subjected to medium wear and impact. Its fine grain structure allows uniform response to hardening and tempering operations.
A2 tool steel angles and channels are produced in a range of standard and custom dimensions to meet varied industrial applications. These profiles can be easily ground, machined, or polished to achieve tight tolerances. The A2 alloy composition, featuring chromium, molybdenum, and vanadium, contributes to its superior strength and hardenability. It is often used where D2 tool steel might be too brittle or O1 too soft. The material’s excellent dimensional control ensures consistent performance in production environments. Its air-hardening quality makes it easier to process without excessive quenching distortion.
The primary benefit of using A2 tool steel angles and channels lies in their durability under heavy loads and moderate shock. These profiles maintain edge retention and resist galling, making them suitable for blanking, forming, and shear blades. A2’s resistance to cracking and chipping is notably better than that of water or oil-hardening steels. As a result, it is frequently used for high-precision molds and fixtures. Its ability to retain hardness up to 425°C ensures dependable performance in demanding tooling conditions. The steel’s consistent hardness after heat treatment ensures long service life.
Industries that commonly utilize A2 tool steel angles and channels include automotive, aerospace, and manufacturing sectors. These materials are used in forming dies, guide rails, and cutting components that demand both wear and impact resistance. The balanced alloy design of A2 allows it to perform effectively under cyclic loading and mechanical stress. Engineers prefer it for tool components that must resist deformation during repeated operations. With proper heat treatment, A2 achieves a hardness of 57–62 HRC, depending on the final application. The material’s machinability also simplifies complex shape fabrication.
A2 tool steel angles and channels are typically available in annealed condition for ease of machining before hardening. They can be easily heat treated in air furnaces, resulting in uniform hardness without oil quenching. The steel’s chromium content contributes to oxidation resistance, allowing longer die life even in high-speed operations. These profiles can be surface ground to a mirror finish for precision fitting. A2’s ability to maintain strength and hardness after tempering makes it reliable for intricate tool designs. It can be nitrided for additional surface hardness if required.
When comparing A2 with other tool steels, it sits between O1 and D2 in terms of wear resistance and toughness. O1 offers greater machinability but lower hardness, while D2 provides superior wear resistance with reduced toughness. A2 balances both characteristics effectively, providing high performance across a wide range of tooling applications. Its stable heat treatment properties make it a preferred choice for high-precision angles and channels. The material also exhibits excellent fatigue resistance, ensuring stability in repetitive stress conditions. This makes it cost-effective over the tool’s lifetime.
Maintenance of A2 tool steel angles and channels is relatively simple, requiring regular lubrication and cleaning to prevent corrosion. The material’s inherent resistance to wear and cracking minimizes downtime and repair costs. It can be easily reground and re-hardened without significant dimensional changes. For best performance, these profiles should be stored in a dry environment and lightly oiled during long-term storage. A2 steel’s consistent mechanical behavior under varying conditions makes it a dependable option for toolmaking. Its longevity and performance justify its widespread industrial usage.
Specification Table
| Property | Specification |
|---|---|
| Standard | AISI A2 / ASTM A681 / UNS T30102 |
| Type | Air-Hardening Cold Work Tool Steel |
| Hardness (Annealed) | Approx. 217 HB |
| Hardness (Hardened) | 57 – 62 HRC |
| Heat Treatment | Preheat to 790–870°C, austenitize at 955–980°C, air cool |
| Tempering Range | 175°C – 540°C (Based on hardness requirement) |
| Density | 7.86 g/cm³ |
| Applications | Dies, punches, shear blades, forming tools, molds, jigs, and fixtures |
Chemical Composition (Typical ranges for SSIS)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.95 – 1.05 |
| Chromium (Cr) | 4.75 – 5.50 |
| Molybdenum (Mo) | 0.90 – 1.40 |
| Vanadium (V) | 0.15 – 0.50 |
| Manganese (Mn) | 0.40 – 1.00 |
| Silicon (Si) | 0.20 – 0.50 |
| Nickel (Ni) | ≤ 0.30 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
Mechanical Properties (Typical)
| Property | Value | Condition |
|---|---|---|
| Hardness (Annealed) | Approx. 217 HB | Annealed |
| Hardness (Hardened) | 57 – 62 HRC | After Heat Treatment |
| Tensile Strength | ~ 1850 MPa | Hardened & Tempered |
| Yield Strength | ~ 1550 MPa | Hardened & Tempered |
| Modulus of Elasticity | ~ 210 GPa | At Room Temperature |
| Impact Toughness (Charpy V-Notch) | ~ 25 J | At 20°C |
| Density | 7.86 g/cm³ | — |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| UNS | T30102 |
| AISI / SAE | A2 |
| ASTM | A681 Type A2 |
| DIN | 1.2363 |
| BS | BD 2 |
| JIS | SKD 12 |
| AFNOR | Z 100 CDV 5 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Size (mm) | Thickness (mm) | Length (m) | Approx. Weight (kg/m) | Section Type |
|---|---|---|---|---|
| 25 x 25 | 3 | 6 | 1.10 | Angle |
| 40 x 40 | 4 | 6 | 2.20 | Angle |
| 50 x 50 | 5 | 6 | 3.30 | Angle |
| 65 x 65 | 6 | 6 | 5.10 | Angle |
| 75 x 40 | 5 | 6 | 4.25 | Channel |
| 100 x 50 | 6 | 6 | 5.85 | Channel |
| 125 x 65 | 6 | 6 | 7.25 | Channel |
| 150 x 75 | 8 | 6 | 9.85 | Channel |
Types Of A2 Tool Steel Angal channel
Stainless Steel Angal & channel
Monel 400 Angal & channel
Inconel 600 Angal & channel
Aluminium Bronze Angal & channel
Super Duplex Angal & channel
Duplex Angal & channel
Nickel Angal & channel
Monel K500 Angal & channel
Frequently Asked Questions (FAQ)
What is A2 Tool Steel?
A2 Tool Steel is an air-hardening, cold-work tool steel known for its excellent dimensional stability, wear resistance, and toughness. It is commonly used in punches, dies, and forming tools.
What are the main advantages of A2 Tool Steel Angles and Channels?
A2 Tool Steel offers a balanced combination of toughness and hardness. It minimizes distortion during heat treatment, provides excellent machinability, and delivers superior wear resistance for long-lasting tool performance.
What are typical applications of A2 Tool Steel Angles & Channels?
They are widely used in industrial tooling, forming dies, shear blades, jigs, molds, punches, and fixtures. The steel’s consistent hardness and stability make it ideal for precision engineering tasks.
What hardness can A2 Tool Steel achieve after heat treatment?
After proper heat treatment, A2 Tool Steel can achieve a hardness range of approximately 57–62 HRC, depending on tempering temperature and application requirements.
How is A2 Tool Steel different from D2 and O1 steels?
A2 Tool Steel provides a balance between O1 and D2. It offers higher toughness than D2 and greater wear resistance than O1, making it suitable for general-purpose tooling and forming applications.
Angle Channels Supplier
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