JIS K 6400-1 Flexible cellular polymeric materials -- Determination of physical properties -- Part 1: General rules
JIS K 6400-2 Flexible cellular polymeric materials -- Physical properties -- Part 2: Determination of hardness (indentation technique) and stress-strain characteristics in compression*, 2012-07-20 Update
JIS K 6400-3 Flexible cellular polymeric materials -- Physical properties -- Part 3: Determination of resilience by ball rebound
JIS K 6401:2011 history
2023JIS K 6401:2023 Flexible cellular polymeric materials -- Polyurethane foam for load-bearing applications excluding carpet underlay -- Specification
2011JIS K 6401:2011 Flexible cellular polymeric materials -- Polyurethane foam for load-bearing applications excluding carpet underlay -- Specification
2006JIS K 6401:2006 Polymeric materials, cellular flexible -- Polyurethane foam for load-bearing applications -- Specification