Our Titanium Elbow Bend pipe, High Speed Tool Steel Bar T1, 316 Stainless Steel Bar is novel and fashionable in design, high in quality and durable so that it has been sold all over the world and greatly welcomed by the local market. It is precisely because we have a young, united and hard-working group that our company is capable of growing and developing rapidly each year. Our excellent after-sales service has made us become partners of many well-known enterprises at abroad. We will try to transform new technologies into products and services with international influence, and write a new chapter with the pioneering spirit of daring to be the first in the world. We are dedicated to quality products and consumer support.
8620 Hot Rolled Steel Bar Supplier
8620 alloy structural steel bar is a type of low-alloy high-strength steel, belonging to the Ni-Cr-Mo series alloy steel. It exhibits excellent hardenability, weldability, and machinability. After appropriate heat treatment (such as carburizing, quenching and tempering), it can achieve a balance of high hardness, high wear resistance, and good toughness. It is widely used in machinery manufacturing, automotive industry, and other fields with strict requirements on material performance.
Chemical Composition (Mass Fraction, %)
| Element | Content Range |
|---|---|
| C (Carbon) | 0.18-0.23 |
| Si (Silicon) | 0.15-0.35 |
| Mn (Manganese) | 0.70-0.90 |
| P (Phosphorus) | ≤0.035 |
| S (Sulfur) | ≤0.035 |
| Ni (Nickel) | 0.40-0.70 |
| Cr (Chromium) | 0.40-0.60 |
| Mo (Molybdenum) | 0.15-0.25 |
| Cu (Copper) | ≤0.30 |
Functions of Core Elements:
Carbon (C): Enhances the strength and hardness of the steel, providing a foundation for heat treatment strengthening.
Nickel (Ni): Improves toughness, ductility, and low-temperature performance, and enhances impact resistance.
Chromium (Cr): Increases hardenability, wear resistance, and corrosion resistance, and optimizes surface hardness.
Molybdenum (Mo): Refines grain size, improves high-temperature strength and temper resistance, and reduces temper brittleness.
Forged steel bar
Basic Physical Properties
Density: 7.85 g/cm³ (at room temperature)
Melting Point: 1420-1460℃
Thermal Conductivity: 42 W/(m·K) (at 20℃)
Specific Heat Capacity: 460 J/(kg·K) (at 20℃)
Coefficient of Linear Expansion: 11.7×10⁻⁶/℃ (20-100℃)
Mechanical Properties (Annealed State, Hardness ≤197 HB)
Tensile Strength: ≥640 MPa
Yield Strength: ≥370 MPa
Elongation (δ5): ≥18%
Reduction of Area (ψ): ≥40%
Impact Energy (Akv, 20℃): ≥63 J
Heat Treatment Characteristics
Carburizing Temperature: 900-950℃
Quenching Temperature: 840-860℃ (oil cooling)
Tempering Temperature: 150-200℃ (low-temperature tempering to maintain high hardness)
Surface Hardness after Carburizing: ≥58 HRC; Core Hardness: 30-45 HRC
Stock 8620 steel bar
Our Service:
We control the quality of every detail and provide you with quality service.
1: Strict selection of high-quality steel raw materials that meet the standards, and upper materials forging upper products.
2: Strictly control the production of steel products during the forging and casting process. Don't take small things for granted, and achieve true quality control.
3: Strictly control each link of product sampling test, keep improving, and select quality.
4: In strict accordance with international standards
We make full use of innovative technologies, new processes, and we apply safe and qualified materials to continuously develop high-quality Alloy Steel Round Bar AISI 4130 4140 4340 8620 1045 D2 H13 that meet market needs. Our company has a professional marketing promotion team, accumulated rich professional knowledge and cooperation experience so we can provide more perfect service for customers. On the road of future development, we will try our best to develop more and better products to serve customers at home and abroad. We look forward to working with all friends to develop together and create a better tomorrow!