GB/T 15825.1-1995 Sheet metal formability and test methods—Formability and indexes

GB/T 15825.2-1995 Sheet metal formability and test methods—General test rules GB/T 15825.3-1995 Sheet metal formability and test methods—Drawing and drawing load test GB/T 15825.4-1995 Sheet metal formability and test methods—Hole expanding test GB/T 15825.5-1995 Sheet metal formability and test methods—Bending test GB/T 15825.6-1995 Sheet metal formability and test methods—Conical cup test GB/T 15825.7-1995 Sheet metal formability and test methods—Earing test GB/T 15825.8-1995 Sheet metal formability and test methods—Forming limit diagram (FLD) test

GB/T 15825.1-2008 Sheet metal formability and test methods—Part 1:Formability and indexes

GB/T 4156-1984 Metals—Cupping testing method (thickness 0.2~2mm) GB/T 4156-2007 Metallic materials—Sheet and strip—Erichsen cupping test GB/T 4156-2020 Metallic materials—Sheet and strip—Erichsen cupping test GB/T 5027-1999 Metallic materials—Sheet and strip—Determination of plastic strain ratio(r-values) GB/T 5027-2007 Metallic materials—Sheet and strip—Determination of plastic strain ratio GB/T 5027-2016 Metallic materials—Sheet and strip—Determination of plastic strain ratio GB/T 5028-1999 Metallic materials—Sheet and strip—Determination of tensile strain hardening exponent(n-values) GB/T 5028-2008 Metallic materials—Sheet and strip—Determination of tensile strain hardening exponent GB/T 15825.2-1995 Sheet metal formability and test methods—General test rules GB/T 15825.2-2008 Sheet metal formability and test methods— Part 2:General test rules GB/T 15825.3-1995 Sheet metal formability and test methods—Drawing and drawing load test GB/T 15825.3-2008 Sheet metal formability and test methods—Part 3:Drawing and drawing load test GB/T 15825.4-1995 Sheet metal formability and test methods—Hole expanding test GB/T 15825.4-2008 Sheet metal formability and test methods—Part 4:Hole expanding test GB/T 15825.5-1995 Sheet metal formability and test methods—Bending test GB/T 15825.5-2008 Sheet metal formability and test methods—Part 5:Bending test GB/T 15825.6-1995 Sheet metal formability and test methods—Conical cup test GB/T 15825.6-2008 Sheet metal formability and test methods—Part 6:Conical cup test GB/T 15825.7-1995 Sheet metal formability and test methods—Earing test GB/T 15825.7-2008 Sheet metal formability and test methods— Part 7:Earing test GB/T 15825.8-1995 Sheet metal formability and test methods—Forming limit diagram (FLD) test GB/T 15825.8-2008 Sheet metal formability and test methods—Part 8:Guidelines for the determination of forming-limit diagrams GB/T 5027-2025 Metallic materials—Sheet and strip—Determination of plastic strain ratio(r) GB/T 5028-2025 Metallic materials—Sheet and strip—Determination of tensile strain hardening exponent(n)

SAE J 77