Our company adheres to the business philosophy of 'bigger, stronger, professional' and the goal of 'brand strategy, continuous operation', and is committed to the development and manufacturing of 2205 stainless steel plate price per kg, 65Mn Spring Steel Strip, D2 Mould Steel Flat Bar. We actively explore overseas markets, actively participate in numerous e-commerce and exhibition promotion and our products sell well in many countries and regions. With the business philosophy of 'quality service promotes product sales', we forge ahead in the industry. The high-quality service solves the worries for many users and wins the high praise and trust of them! 'Technological innovation, honesty and pragmatism' is our company's business philosophy. Our company has a complete set of pre-sale and after-sales service system to track the use of products and feedback, and provide timely and thoughtful follow-up service for customers.
Produce name sum24l free cutting steel bar
AISI SAE 12L14/JIS SUM24L free cutting steel bar
SUM24L free-cutting structural steel is a Japanese standard. SUM24L free-cutting structural steel is a kind of steel that is easy to be cut by turning, milling, drawing, planing, drilling, etc., also called steel for automatic machine tool processing, referred to as automatic steel.
Sum24l Free Cutting Steel Bar for hardware tool
Basic Physical Properties
Density: 7.85 g/cm³ (at room temperature)
Melting Point: 1420-1460℃
Thermal Conductivity: 45 W/(m·K) (at 20℃)
Specific Heat Capacity: 470 J/(kg·K) (at 20℃)
Coefficient of Linear Expansion: 11.5×10⁻⁶/℃ (20-100℃)
Magnetism: Magnetic (ferrite + pearlite structure)
Mechanical Properties (Delivery Condition: Hot-Rolled or Cold-Drawn, Typical Values)
| Performance Indicator | Hot-Rolled Condition | Cold-Drawn Condition (Diameter ≤ 20mm) |
|---|---|---|
| Tensile Strength (σb) | ≥ 420 MPa | ≥ 520 MPa |
| Yield Strength (σs) | ≥ 245 MPa | ≥ 420 MPa |
| Elongation (δ5) | ≥ 22% | ≥ 10% |
| Reduction of Area (ψ) | ≥ 36% | ≥ 25% |
| Brinell Hardness (HB) | ≤ 170 | ≤ 200 |
Core Machinability Advantages
Machining Efficiency: Compared with ordinary low-carbon steel (e.g., Q235), the cutting speed can be increased by 20%-30%, and the processing time per piece can be reduced by 15%-25%. It is suitable for automated production lines (such as batch processing with CNC lathes).
Tool Life: Due to the lubricating and drag-reducing effects of Pb and MnS, the tool wear rate is reduced by 30%-50%. It is especially suitable for long-term continuous use of high-speed steel (HSS) or cemented carbide tools.
Surface Quality: The surface roughness (Ra) of the machined parts can reach 1.6-3.2μm, which can meet the surface requirements of most general parts without additional polishing.
Chip Breaking Performance: Chips are easy to break into short coils or granules, avoiding 缠绕 (tangling) around tools or workpieces and reducing cleaning time during the processing.
1117 flat bar
Frequently Asked Questions:
1) Q. What is your MOQ?
You only need to purchase one and we can ship it to you.
(2) Q: How to buy?
You can email us directly and we will contact you in time.
(3) Q. Are you a factory or a trader?
A: We are an enterprise integrating industry and trade. We have our own factory and our own international trade team.
Our Service
We warmly welcome friends from all walks of life to come to our company for inspection and guidance, and are willing to jointly contribute to the development of 1215 Sum23 11smn30 Cold Finished Steel Round Free Cutting Equivalent on the basis of mutual benefit. It is our expectation to improve the enterprise efficiency, reduce the cost and reduce the scrap rate of your company. Let us work together to win-win and mutual benefit, build a better future together. We have achieved exponential growth in production capacity while significantly improving product quality and stability.