API 11B Sucker Rod Couplings - AISI 4130/4140 Alloy Steel with 95,000 PSI Tensile Strength
Price:
Negotiable
MOQ:
1 PCS
Delivery Time:
2 weeks
Brand:
Zhongshi
Product Description
API 11B Compliant Sucker Rod Couplings
Manufactured using cold-drawing craftsmanship with premium Cr-Mo alloy steel materials including 42CrMoA (equivalent to AISI 4140) or 20Ni2MoA (equivalent to AISI 4620). Our couplings feature rolled thread technology that creates compressive stress at thread roots for maximum strength.
Available Configurations
Available in full size, slim hole, and over size variants. Combination couplings are also offered for different diameters (sub-coupling) for both Class T and Class SM couplings.
Key Features
- Class T couplings manufactured from AISI 5140 steel with phosphate chemical treatment or black oxide coating options
- Class SM couplings feature spray metal hardening process applied directly to base metal
- Cold form rolled thread technology eliminates material removal, enhancing thread strength
- Available in multiple size configurations including combination couplings for different diameters
Chemical Properties - Class T Coupling
| Element | Composition Range |
|---|---|
| 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
| Element | Composition Range |
|---|---|
| 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
| Property | Value |
|---|---|
| Tensile Strength, PSI (MPa) | 95,000 (655) |
| Hardness Rockwell A | 56/62 |
Mechanical Data by Grade
| 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 |
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Puyang Zhongshi Group Co., Ltd.
Location
Room2212, B Building, Tiandi Times Square, Weiyang District, Xi'an City, Shaanxi P.R., China
Contact Person
Liza