Precautions for welding of S690QL steel equivalent to grade 50

When talking about our team, it is hard not to mention our QC department (Quality Control). We have built strict qualitycontrol system to guarantee the steel quality. During the steel materials production, we have strict monitoring measures and indicators, and ensure no chemical composition, mechnical properties and so on technical problems for the steel materials S690QL steel equivalent to grade 50. After production, our QC department will conduct another inspection regarding to the steel quantity, dimension, mark and so on points before delivery.

A514Gr.Q material is a quenched and tempered high-strength weldable steel plate under the ASTM standard. It is mainly used in places where high tensile strength and high yield are required, engineering vehicle lifting gears, and racks for offshore platforms. Depending on the thickness, its hardness is between 235-290, the yield is greater than 630MPa, and the tensile strength is greater than 700MPa.

asme sa514 grade H alloy steel coil element composition%
C: 0.12-0.21, Si: 0.20-0.35, Mn: 0.95-1.30, P max.: 0.035, S max.: 0.035, Cr: 0.40-0.65, Ni: 0.30-0.70, Mo: 0.20-0.30, V: 0.03-0.08, B: 0.001-0.005
The mechanical properties in thickness (mm)T≤65
Yield strength (≥Mpa): 690
Tensile strength (Mpa):760-895
Elongation in ≥,%: 18

The yield strength of Q690D steel plate is 690 Mpa and the impact temperature is - 20℃. S690QL steel equivalent to grade 50, Q690D steel plate has high strength, good plasticity and toughness, good weldability and good cold and hot performance. Q690D steel plate is mainly used to manufacture various large engineering structural components and construction machinery. Because of its high strength and good toughness, Q690D steel plate can reduce the self weight of components and meet the requirements of large-scale and lightweight engineering components and equipment under the condition of ensuring strength, stiffness and reliability.

Our company will accept the product quality objection registration record, pass it to the S690QL steel equivalent to grade 50 production unit and relevant departments, and timely coordinate the supervision of product S690QL steel equivalent to grade 50 quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.

We have a good inventory system because of which the alloy steel plates and structural steel sheets are supplied and delivered to our customers on time. Our alloy steel plate is significantly affordable than austenitic S690QL steel equivalent to grade 50 stainless steel which helps to reduce maintenance and full life costs – as well as improved safety over standard boilerplate. Contact us today to request a quotation or email us with your complete specification, we are happy to help you!