Black Electrophoresis C45 Carbon Steel Bolt Phosphating Cold Flow

C45 Steel Cold-flow Custom Machined Parts Screw Bolt

Overview

Materials of Screw Bolt

The ultimate stress of C45 body steel is expressed in Newtons per millimeter and must be at least 370-490 N/mm2 (MPa).

The elongation of C45 steel varies with the heat treatment process and thickness, but is usually expressed as 14-17%.

The tensile strength of the steel under test is expressed in Newtons per millimeter and must be at least 700-800 N/mm2 (MPa).

The following are some of the mechanical properties of C45 material normalized

The ultimate stress of the primary steel is expressed in Newtons per millimeter and must be at least 275-390 N/mm2 (MPa).

The elongation of C45 steel varies with the heat treatment process and thickness, but is usually expressed as 14-16%.

The tensile strength of the steel under test is expressed in Newtons per millimeter and must be at least 305-620 N/mm2 (MPa).

Surface Treatment of Screw Bolt

1. Sandblasting

Sandblasting is powered by compressed air to form a high-speed jet beam to spray material (copper ore, quartz sand, diamond sand, iron sand, sea sand) at high speed onto the surface of the workpiece to be treated, so that the appearance or shape of the surface of the workpiece is changed. Due to the impact and cutting effect of the abrasive on the surface of the workpiece, the surface of the workpiece obtains a certain degree of cleanliness and different roughness, so that the mechanical properties of the surface of the workpiece are improved, thus improving the fatigue resistance of the workpiece, increasing the adhesion between it and the coating, extending the durability of the coating film, and also facilitating the leveling and decoration of the coating."

2. Anodizing

After anodic oxidation treatment, the surface of aluminum and its alloys can obtain a dense film layer much thicker than the natural oxide film. This layer of artificial oxide film is then closed, and the crystalline oxide film is transformed into a crystalline oxide film, and the pores are also closed, so that the surface luster of the metal can remain unchanged for a long time, and the corrosion resistance and mechanical strength are improved, and a decorative appearance can be obtained by dyeing.

Custom Method & Procedure

If you are interested in the custom machined parts screw bolt, please contact our sales and provide drawings or samples.

Main Testing Equipment

Typical Application

FAQs

Q1: Are you manufacturer or trading company?

A1: We are manufacturer with more than 10,000 square meters plant.

Q2: Will you provide free samples?

A2: Yes, we will provide free sample for customer to test.

Q3: Can you make CNC machining parts according to our drawings?

A3: Yes, we can make the parts according to your drawings.

Q4: Can you make CNC machining parts according to samples?

A4: Yes, we can make the parts according to your samples.

Q5: Which shipping method will you use for delivery?

A5: It depends on customer. Our price is based on FOB, customer needs to afford the shipping. But we are happy to help based on request.

Q6: What’s your payment terms?

A6: We accept T/T, Western Union, Money Transfer, TAAJ, etc.