4130 seamless steel tube
Jaway steel is major manufacturing specialized in stainless steel wih high quality and best price! Which can be widely used in bicycle fittings, kitchen and sanitation tools, goods shelf, pet cages, gill racks, decorative handles and baskets, food and medical machinery accesses, etc.
4130 seamless steel tube:
4130 structural steel has high strength and toughness, high hardenability, critical hardenable diameter of 15~70mm in oil; steel has good thermal strength, and has sufficient high temperature strength below 500°C, but at 550°C The strength is significantly reduced; when the alloying element is at the lower limit, the welding is quite good, but the weldability is medium when it is close to the upper limit, and it needs to be preheated to above 175°C before welding; the machinability of the steel is good, the plasticity is moderate during cold deformation; The range of 300 to 350°C has the first type of temper brittleness; there is a tendency to form white spots.
This type of steel is usually used in a quenched and tempered state, and a steel having a lower carbon content can also be used as a carburized steel requiring a higher core strength.
In the medium-sized machinery manufacturing industry, it is mainly used to manufacture quenched and tempered parts with large cross-section and working under high stress conditions, such as shafts, spindles and high-load steering wheels, bolts, studs, gears, etc.; in the chemical industry a welded structure for the manufacture of welded parts, plates and pipes, and a high-pressure pipe that does not exceed 250°C in a medium containing nitrogen and hydrogen; a fastener used in the manufacture of steam turbines and boilers for manufacturing below 450°C, High pressure flange and flange cover below 500°C.
4130 seamless steel tube surface:
Surface grade
430 stainless steel has the following conditions, the status is different, and the dirt resistance and corrosion resistance are also different.
NO.1, 1D, 2D, 2B, N0.4, HL, BA, Mirror, and various other surface treatment states.
Feature processing
1D—The surface has discontinuous granules, also known as matte surfaces. Processing technology: hot rolling + annealing shot pickling + cold rolling + annealing pickling.
2D - a slightly shiny silvery white. Processing technology: hot rolling + annealing shot pickling + cold rolling + annealing pickling.
2B—Silver white and better gloss and flatness than 2D surfaces. Processing technology: hot rolling + annealing shot pickling + cold rolling + annealing pickling + quenching and rolling.
BA—The surface gloss is excellent and has a high reflectivity, like the mirror surface. Processing technology: hot rolling + annealing shot pickling + cold rolling + annealing pickling + surface polishing + temper rolling.
No.3—There is a good gloss and the surface is rough. Processing: Polishing and temper rolling for 2D or 2B with 100~120 abrasive (JIS R6002).
No.4—There is a good gloss and a fine grain on the surface. Processing: Polishing and temper rolling for 2D or 2B with 150~180 abrasive (JIS R6002).
HL - silvery gray with hairline stripes. Processing: Polishing the 2D or 2B with an appropriate size of abrasive material to continuously polish the surface.
MIRRO—mirror state. Processing: Grinding and polishing the 2D or 2B with the appropriate size of the abrasive material to the mirror effect.
If you want to get more information about 4130 seamless steel tube, pls contact us-Jaway Steel-via 819@jawaysteel.com!
Related Products
