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Email: Alice@nxf-group.com
NXF UNS S17400/17-4PH/AISI 630 OD DN6-1200 Class 3000-9000 Special Stainless Steel 90° or 45° Forging SW Elbow
17-4PH Introduction
Forming
Grade 17-4 stainless steel can be formed mildly.
Welding
Grade 17-4 stainless steel can be welded using common fusion and resistance welding methods. Oxyacetylene welding method is not preferred for welding this alloy.
Heat Treatment
Grade 17-4 stainless steel is soaked at 1038°C (1900°F) for 30 min and cooled below 16°C (60°F) for complete martensite
transformation in the condition A. The condition A material is treated at 482°C (900°F) for 1 h followed by cooling. Solution
treated material is soaked for 4 h at specific temperature in H925, H1025, H1075, H1100, and H1150 conditions followed by cooling in air. Solution treated material is soaked at 760°C (1400°F) for 2 h in the H1150M condition followed by cooling. It is again heated at620°C (1150°F) for 4 h followed by cooling.
Forging
Grade 17-4 stainless steel is forged at 1010°C (1850°F). Before performing this process, it is soaked at 1177°C (2150°F).
Post-work solution treatment should be performed before final hardening.
Hot Working
Grade 17-4 stainless steel can be hot worked using common processes. It is treated at 1038°C (1900°F).
Post-work solution
Treatment should be performed before final hardening.
Cold Working
Grade 17-4 stainless steel can be cold worked using common techniques in spite of its high initial yield strength.
Annealing
Grade 17-4 stainless steel is annealed at 1038°C (1900°F) for 0.5 h followed by cooling rapidly.
Hardening
Grade 17-4 stainless steel has high ductility, and can be formed using all conventional techniques. Powerful equipments are required for forming this alloy because it is stronger than the regular steel. Heavy-duty lubricants are used during cold working.
Applications
Grade 17-4 stainless steel is used in the following applications:
* Nuclear reactor
* Aircraft and gas turbines
* Oil field
* Chemical process components
* Paper mill
SW Elbow Introduction
17-4PH Chemical Composition And Mechanical Properties.
SW ELBOW DRAWING
Product Physical Picture
Elbow Produce Processing
1. Raw material preparation and inspection: Special stainless steel, round steel / thick-walled solid billets, undergo component, mechanical property, and ultrasonic flaw detection tests.
2. Cutting and heating: Cut the billets to the specified size, and heat them to 1100–1200℃ (for carbon steel).
3. Forging (Hot Forming): The hot billet is placed into a precision forging die, which is then shaped into a 45°/90° elbow. A flash is produced at the parting line.
4. Edge finishing and cleaning: The edge trimming tool removes burrs, and shot blasting / sandblasting removes the oxide layer.
5. Heat treatment: Through normalizing, quenching or tempering, optimize the material structure and hardness.
6. Precision machining: Machining of socket holes, center holes, end faces, and internal and external chamfers, suitable for welding and assembly.
7. Surface treatment: Stainless steel undergoes acid pickling and passivation; for other materials, they are painted or coated with anti-corrosion materials.
8. Identification: Pressing specification, pressure grade, material, furnace number, manufacturer's logo.
9. Final Inspection: Dimensional measurement, penetrant testing (PT), and optional hardness and pressure tests.
10. Packaging and Shipping: Protect the jointing area, pack for box/pan tray transportation.
Our advantage as follow:
departments to coordinate and control the quality.
1. who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4. why should you buy from us not from other suppliers?
Our advantage:3S Service (Small Quantity/Short Time/Special Material) We have our own factories, quality can be controlled seriously.We Specialize in manufacturing about 21 years.We have professional testing department and testing equipment.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian