Project Description
N850 Nonmagnetic Steel
We produce N850, Hastelloy C-22HS, non-mag material Steel Bars and Non Magnetic Hollow Bars.
1. CHEMICAL COMPOSITION
N850 is a special nonmagnetic, nickel chromium molybdenum alloy.
| C | Cr | Mo | Fe | Co | Ni |
| max. 0,01 | 20,00 – 22,00 | 15,00 – 18,00 | max. 2,0 | max. 1,0 | remainder |
2. MECHANICAL PROPERTIES
Following mechanical properties (tested at room temperature) are achieved by a special cold-working process over the full length of the collar:
| TEXT | OD | KSI | N/MM |
| Yield Strength (min.) 0,2%-offset method: | OD up to 10“ | 150 ksi | 1035 N/mm² |
| Tensile Strength (min.): | 160 ksi | 1104 N/mm² | |
| Elongation (min.): | 15% | 15% | |
| Reduction of area (min.): | 50% | 50% | |
| Impact energy (min.): | 100 ft.lb | 135 J | |
| Endurance Strength / N=10⁵ (min.): | ± 90 ksi | ± 620 N/mm² | |
| Hardness Brinell: (min.): | 300-430 HB | 300-430 HB |
3. MAGNETIC PROPERTIES
Relative permeability: ≤ 1,005.
4. CORROSION RESISTANCE
Superior corrosion properties compared to other Ni-based alloys are given.
The material specified conforms to ANSI/NACE MR0175 / ISO 15156.
This alloy can be used in environments containing 1000 psia (7000 kPa) H2S at a chloride concentration of 180000 mg/L and any in situ pH up to 550°F (288°C). It can be used also in environments containing 500 psia (3500 kPa) H2S at a chloride concentration of 180000 mg/L, at any situ pH and in the presence of elemental sulfur up to 400°F (204° C)
5. NON-DESTRUCTIVE TESTING
- Magnetic inspection:Drill collars are 100% tested by a proprietary probe-testing process.
- Ultrasonic inspection: Each collar is ultrasonically inspected over 100% of the volume according to ASTM E 114, last edition as a minimum level.
We are committed to integrate steel resources in china and serve the global steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise before. In the aspect of resources and information, we have established cooperative relationship with nearly hundred enterprises, either state-owned or private owned in China.
What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want. We provide preffesional one-stop service to the Contractors of follows project:
- Oil and Gas Pipeline Construction
- Onshore and Offshore
- Boiler Manufacturers
- Oil Refining Equipment
- Petroleum and Chemical Plant Construction
- Fire Protection
- Heating & Air Conditioning
Our ability to purchase materials directly from leading mills at the best possible price will give you the competitive edge. This coupled with a skilled workforce dedicated to embracing the demands of the markets we serve. Just give us a call +86-731-89903933.
