Why carbon steel hardox 400 is generally not heat treated

Standing at a new historical starting point, we adapt to the requirements of supply side carbon steel HARDOX 400 structural reform, adhere to the overall strategy of "innovation driven, quality leading, quality improving and efficiency increasing, transformation and development", and constantly improve the development concept and development level with a forward-looking vision and grand vision. Now we have been ranked the International leading carbon steel HARDOX 400 steel materials supplier.

carbon steel HARDOX 400 product is a low-alloy high-strength steel that adds a small amount of alloying elements to general steel to make it have corrosion resistance in the atmosphere. Weathering steel has 2-8 times the atmospheric corrosion resistance of ordinary carbon steel, and the longer the service time, the better the corrosion resistance. In addition to excellent weather resistance, weathering steel also has excellent mechanical and welding functions.

High-temperature boiler steel plates such as 15CrMoR plate, 12Cr1MoVR steel plate, ASME SA387 grade 22 steel, A387 Gr 91 boiler steel, ASME SA1017 Gr 23, SA1017 Gr 911, SA1017 Gr 122 steel, carbon steel HARDOX 400, must have features of:Sufficient high temperature durability and durable plasticity;Good high temperature tissue stability;Good high temperature oxidation resistance (heat resistance);Good hot and cold processing technology (mainly refers to cold bending deformation and weldability), etc.

The effect of nitrogen on steel performance is similar to that of carbon and phosphorus. With the increase of carbon steel HARDOX 400 nitrogen content, the strength of steel can be improved, plasticity especially toughness can be significantly reduced, weldability becomes worse, and cold brittleness is intensified. Nitrogen with aluminum, niobium, vanadium and other elements can reduce its adverse effects, improve the performance of carbon steel HARDOX 400 steel, can be used as an alloying element of low alloy steel.

The chemical composition difference between carbon steel HARDOX 400, Q235B and 20# steel is as follows: The chemical composition of 20# steel: C: 0.17-0.23%, Si: 0.17-0.37%, Mn: 0.35-0.65%, Cr: ≤ 0.25%, Ni: ≤ 0.30%, Cu: ≤ 0.25%. Chemical composition of Q235B steel: C: ≤ 0.20%, Si: ≤ 0.35%, Mn: ≤ 1.40%, P: ≤ 0.045%, S: ≤ 0.045%. The difference of mechanical properties between carbon steel HARDOX 400, Q235B and 20# steel is as follows: The mechanical properties of 20# steel: tensile strength 410 MPa; yield strength 245 MPa; elongation after fracture: 25; reduction of area: 55; no impact. Q235B steel mechanical properties: tensile strength 370-500 Mpa; yield strength: ≥ 235 Mpa; elongation after fracture: 25; impact absorption energy: 27J.

We are a professional exporter of JIS 3101 SS 540 steel and a steel stockist in China. We stock more than 1000 tons of JIS 3101 SS 540 steel every month. If you want to get the price of JIS 3101 SS 540 steel, please do not hesitate to contact us. Please feel free to contact us by email or phone at any time if you have any need for the carbon steel HARDOX 400 chemical composition and mechanical properties of JIS 3101 SS 540.

Our company will accept the product quality objection registration record, pass it to the carbon steel HARDOX 400 production unit and relevant departments, and timely coordinate the supervision of product carbon steel HARDOX 400 quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.