Our company is China's 10th largest supplier & Exporter of stainless steel, carbon steel plate and section, alloy steel plate and pipes. We are specialized in stocking & distributing various Stainless Steel, carbon steel plates, A709 grade 50 high strength steel angle steel, H beam steel to worldwide for specific & urgent requirements. We have a fully advanced and modernized warehouse that stores tonnes of our value-adding A709 grade 50 high strength steel products, which we source out from the mills that are compliant with the universal guidelines for plate production.
SAE4340, same as UNS G43400. Tensile strength σb ≥980(100) Yield strength σs ≥835(85), used to manufacture important parts with high strength and good plasticity. After nitriding treatment, make important parts with special functional requirements, such as shafts, gears, and gears. Firmware etc. Delivery A709 grade 50 high strength steel in heat treatment (normalizing, annealing or high temperature tempering) or without heat treatment.
The cold working performance of A709 grade 50 high strength steel and so on steel structure engineering steel is good, which can ensure that the steel will not crack or brittle fracture during high-temperature processing, and will not have a great impact on strength, plasticity and toughness due to processing. The durability of A709 grade 50 high strength steel and so on steel structure engineering steel is good. Durability refers to the service life of steel structure. The main factor affecting the service life of steel is the poor corrosion resistance of steel, followed by the deterioration of mechanical properties of steel under long-term load, repeated load and dynamic load.
With the increase of temperature, the yield limit of A709 grade 50 high strength steel will decrease monotonically, but the tensile strength of A709 grade 50 high strength steel will rise to a high peak value at a certain temperature, and then decrease. This peak temperature is called the blue brittleness temperature of A709 grade 50 high strength steel. Near the blue brittleness temperature, the A709 grade 50 high strength steel strength increases and the plasticity decreases. The elongation and section shrinkage of A709 grade 50 high strength steel increase with the increase of temperature, but there is a low peak at the blue brittleness temperature. The blue brittleness temperature of low carbon steel ranges from 200 ℃ to 250 ℃. The blue brittleness of low alloy steel is not obvious as that of low carbon steel, and the blue brittleness temperature is higher.
Weathering steel A709 grade 50 high strength steel inventory: 22*3400*13000, 23.1*2590*7790, 25*1600*9300, 25*1600*9500, 25*2400*8200, 30*1600*10720, 30*1600*8600, 31.2*2950*9380, 31.9*2920*9420, 32*2500*6000, 34*1900*12000, 38*3300*13400, 60*1750*9100, 70*2260*7240, 70*2260*7700, 70*2260*7950, 70*2270*7000, 70*2270*7350, 70*2270*7600, 70*2500*12000, 75*2390*4320, 80*2200*10000, 80*2250*8850.
We are leading supplier of pipeline steel. The pipeline steel in usually in forms of pipeline steel coils, pipeline steel sheet, pipeline steel plate and pipeline steel pipes. And the most popular standard is API 5L. For questions about A709 grade 50 high strength steel pipeline steel, such as X70 steel properties, API 5L X42 steel properties, difference between API 5L PSL1 and API 5L PSL2, API 5L grade B steel price, please feel free to communicate with us.
The company's after-sales service team is a high-quality professional team. Most after-sales employees have rich service experience and have reached the level of after-sales engineer. The after-sales department implements the after-sales personnel responsibility system and a 24-hour response mechanism. The company's advanced customer relationship management system provides customers with "standardized and streamlined services". A sound customer relationship maintenance system, and a "one-stop" customer satisfaction tracking system, all reflect our strong after-sales service guarantee.
