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Materials
JIS, ASTM and GB material equivalents
Drawings from Japan use JIS grades, from the US ASTM or UNS, from Europe EN, and Chinese mills supply to GB. This table maps the sheet and strip grades we stamp and fabricate most often. Equivalents are close, not identical — always check the property your part depends on.
Equivalent grades
| JIS | ASTM / UNS | EN | GB (China) | Material |
|---|---|---|---|---|
| SPCC (G 3141) | A1008 CS | DC01 (EN 10130) | DC01 / SPCC | Cold-rolled carbon steel |
| SGCC (G 3302) | A653 CS | DX51D+Z (EN 10346) | DX51D+Z | Hot-dip galvanized steel |
| SUS304 (G 4305) | 304 / S30400 | 1.4301 (X5CrNi18-10) | 06Cr19Ni10 | Austenitic stainless steel |
| A5052 (H 4000) | 5052 / A95052 | EN AW-5052 | 5052 | Al-Mg aluminium alloy |
| C7701 (H 3130) | C77000 | CuNi18Zn27 | BZn18-26 | Nickel silver (copper-nickel-zinc) |
Where equivalents differ
- Tempers: JIS uses suffixes such as 1/2H; ASTM and EN use their own temper codes. Specify temper and hardness, not just the grade.
- Coatings: SGCC coating mass (for example Z12, Z27) must be stated separately from the base grade.
- Chemistry: equivalents overlap but limits differ. If your part relies on a property — springback, solderability, corrosion — put that requirement on the drawing.
Related pages
Engineering guide
JIS B 0408 general tolerances for pressed metal parts
JIS B 0408 general dimensional tolerances for blanked and bent/drawn metal press parts, grades A, B and C, and how to call them out on drawings.
Metal stamping
Precision metal stamping, from 1,000 pieces
Progressive-die metal stamping in Suzhou: shielding cans, terminals, spring clips. 13 presses 60–250 T, ±0.02 mm, MOQ 1,000 pcs, ISO 9001.