SS41 steel and SS400 steel comparison details

The comparison between SS41 steel and SS400 steel can be summarized as follows:

1. Chemical composition:
- SS41 steel: carbon content is about 0.05%-0.15%, manganese content is about 0.60%-1.00%.
- SS400 steel: carbon content is about 0.05%-0.25%, manganese content is about 0.80%-1.20%.

2. Mechanical properties:
- SS41 steel: Usually has lower strength and hardness and is suitable for general structural use.
SS400 steel: Compared to SS41 steel, SS400 steel has slightly higher strength and hardness, and is more commonly used in structural parts manufacturing.

3. Use:
SS41 steel: commonly used in general structural parts, welding components, etc.
SS400 steel: widely used in construction, manufacturing, bridge and other fields of structural parts manufacturing.

4. Standard:
- SS41 steel: Old Japanese steel standard, has been replaced by SS400 steel.
SS400 steel: a structural carbon steel plate in the current Japanese JIS G3101 standard.

5. Differences:
SS41 steel is actually the predecessor of SS400 steel, with slight differences in chemical composition and properties, but it is roughly similar.
SS400 steel is more perfect in development and specification, and is widely used in many fields.

In general, SS41 steel and SS400 steel have slight differences in chemical composition, mechanical properties and use, but both are suitable for general structural use. The selection of suitable materials should be based on the specific project requirements, standard requirements and manufacturer recommendations.