How to deal with iron oxide residual problem of SMA400AP hot rolled steel bar

The company adopts modern management concept, adheres to “quality for survival, integrity for development”, and provides customers with high-quality and reliable steel SMA400AP hot rolled steel bar products and wholehearted service. The company continuously deepens the internal reform of the enterprise, innovates in the reform, develops in the innovation, and gradually forms a set of management and operation mechanism which adapts to the SMA400AP hot rolled steel bar market and has strong competitiveness.

SAE4340, same as UNS G43400. Tensile strength σb ≥980(100) Yield strength σs ≥835(85), used to manufacture important parts with high strength and good plasticity. After nitriding treatment, make important parts with special functional requirements, such as shafts, gears, and gears. Firmware etc. Delivery SMA400AP hot rolled steel bar in heat treatment (normalizing, annealing or high temperature tempering) or without heat treatment.

The advantages of SMA400AP hot rolled steel bar, carbon steel: First of all, the price of carbon steel is low. Compared with stainless steel, galvanized steel, alloy steel, etc., the carbon steel has a great advantage in price. It is a good choice for manufacturers and merchants such as construction sites that use building materials in large quantities. Secondly, the carbon steel is easy to process. In the early days, steelmaking technology was underdeveloped. It was very difficult to manufacture high-precision steel, and carbon steel is widely used.

Phosphorus is a very harmful element in SMA400AP hot rolled steel bar steel. With the increase of phosphorus content, the strength, flexion ratio and hardness of SMA400AP hot rolled steel bar steel increased, but the plasticity and toughness decreased significantly. In particular, the lower the temperature, the greater the impact on plasticity and toughness, increase the cold brittleness of steel.

Mechanical Properties A588 corten steel:
ASTM A588 Grade A is a high-strength, low-alloy steel plate utilized primarily in structural applications such as bridges and buildings. We stock this material as A588 Gr A & B in plate and 606 in sheet.
Tensile: 70 ksi min (4” and under), 67 ksi min (4”-5”) 63 ksi min (over 5”-8”)
Yield:50 ksi min (4” and under), 46 ksi min (4”-5”) 42 ksi min (over 5”-8”)
Elongation:16% min in 8” 19% min in 2” (for plates wider than 24”)

It is a modern high-tech professional enterprise integrating scientific research, SMA400AP hot rolled steel bar production and sales. The company is mainly engaged in the manufacture, installation and commissioning of boiler and pressure vessel, chemical, metallurgical, petroleum and other equipment, as well as SMA400AP hot rolled steel bar process technology development, technology transfer and related technical consulting and technical services.

The company strengthens process management and pays attention to assessment. One of the key points of good service is to strengthen the process management and improve the evaluation mechanism. Make the after-sales service system more perfect and provide better service for customers.