Cold Drawing Alloy Steel AISI 4130 Polished Steel Rod
Brand Name:Zhongshi
Certification:API ,ISO ,QHSE
Model Number:sucker rod
Minimum Order Quantity:1 PCS
Delivery Time:2 weeks
Payment Terms:T/T
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Product Details
Polish Rod With Fine Cr-Mo Alloy Steel 42CrMoA or Alloy Steel
20Ni2MoA by Cold-Drawing Craftsmanship
Products Description:
Class T and Class SM coupling for sucker rods are manufactured as
per API Specification 11B. For the thread cutting, we are using
cold form rolled by displacing rather than by removing of material
for making the coupling thread. The thread rolling cutting results
in a compressive stress at the root of the thread, giving maximum
strength to the traditional weak point of cut-thread couplings.
The couplings are available in full size, slim hole and over
size.Also, combination couplings are available for different
diameters (sub-coupling) for both Class T and Class SM couplings.
They are all designed in accordance with API Spec 11B and are made
of fine Cr-Mo alloy steel 42CrMoA(equivalent to AISI4140) or alloy
steel 20Ni2MoA(equivalent to AISI 4620) by cold-drawing ,rolled
thread ,and smooth surface process made up
Features:
1. The class T coupling is using AISI 5140 to manufacture. The
coupling is coated using phosphate chemical treatment or black
oxide on customer’s request. For Class SM coupling, the spray metal
is a specification hardening process and is applied on the base
metal.
2. The couplings are available in full size, slim hole and over
size. Also, combination couplings are available for different
diameters (sub-coupling) for both Class T and Class SM couplings.
Technical Specifications:
| Chemical Properties: Class T Coupling | |
| Steel | AISI 5140 |
| C | 0.37~0.44 |
| Si | 0.17~0.37 |
| Mn | 0.50~0.80 |
| P | ≤0.040 |
| S | ≤0.040 |
| Spray Metal Coating Chemical Properties SM Coupling | |
| Carbon | 0.50~1.00 |
| Silicon | 3.50~5.50 |
| Phosphorus | 0.00~0.02 |
| Sulfur | 0.00~0.02 |
| Chromium | 12.00~18.00 |
| Boron | 2.50~4.50 |
| Iron | 3.00~5.50 |
| Cobalt | 0.00~0.10 |
| Titanium | 0.00~0.05 |
| Aluminum | 0.00~0.05 |
| Zirconium | 0.00~0.05 |
| Nickel | Balance |
| Mechanical Properties: Class T Coupling | |
| Tensile Strength, PSI: (MPa) | 95,000 (655) |
| Hardness Rockwell A | 56/62 |
Mechanical Data:
| Grade | Yield Strength Rel (Mpa) | Tensile Strength Rm (Mpa) | Percentage Elongation A (%) | Contraction Percentage of Area Z (%) | Impact Toughness a(3/cm2) |
| C | ≥ 414 | 620-793 | ≥ 12 | ≥ 55 | ≥ 70 |
| K | ≥ 414 | 620-793 | ≥ 12 | ≥ 55 | ≥ 70 |
| D | ≥ 620 | 794-965 | ≥ 10 | ≥ 505 | ≥58.85 |
Cold Drawing Alloy Steel AISI 4130 Polished Steel Rod
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