The chemical compositions of Q345D and Q345E are very similar. However, the key difference lies in their impact energy performance at low temperatures. Q345D is tested for impact energy at -20°C, with a value of 27J (for material sizes between 250mm and 400mm). In contrast, Q345E undergoes an impact test at -40°C, also achieving 27J under the same size range. This demonstrates that Q345E has superior low-temperature toughness compared to Q345D, making it more suitable for extreme cold environments.
Due to its enhanced performance in harsh conditions, Q345E is typically more expensive than Q345D. It is often used in regions with severe winter climates, such as Northeast China or Russia, where materials must withstand extreme cold without losing structural integrity.
If you're looking for detailed specifications or want to learn more about the latest updates on these materials, you can refer to GB/T 1591, which provides comprehensive standards for low-alloy high-strength structural steels. For more information directly from our company, visit: http://...
The design of the towel rack should consider whether it is convenient or not, but also consider the waterproof problem. Home use towel rack , brass toilet paper holder Bathroom Series, made of high quality brass material,chrome surface corrosion resistance long lasting use for years and years, no worries about rusted and oxidized.
Bathroom Accessories,Towel Rack Stand,Wall Mounted Towel Rack,Outdoor Towel Rack
HESHAN CAIZUN SANITRAYWARE CO.,LTD , https://www.caizunsanitaryware.com