Material specification page for spring (roll) pin in A2 Stainless Steel. Covers the grade designation (A2-70 (304)), corrosion and magnetic behavior, comparable grades and their trade-offs, and the sizes available to ISO / DIN.
Why Choose A2 Stainless Steel for Spring (Roll) Pin — ISO / DIN (Series 103)
The most common stainless grade for indoor and general outdoor fasteners. For spring (roll) pin — iso / din (series 103), this matters when good general corrosion resistance is the primary requirement.
Mechanical & Physical Properties
| Grade designation | A2-70 (304) |
|---|---|
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C |
| Corrosion characteristic | Good general corrosion resistance |
Corrosion Behavior in Service
A2 (304) gives excellent atmospheric and most-water corrosion resistance and is the most common stainless for Spring (Roll) Pin — ISO / DIN (Series 103) in indoor and general outdoor service. In chloride-bearing environments (marine air, road salt, swimming pools) consider stepping up to A4 (316).
Comparable Grades
For Spring (Roll) Pin — ISO / DIN (Series 103), the alternative stainless grade is A4 (316). A2 (304) suits general indoor and outdoor service; A4 (316) adds molybdenum for marine and chloride environments. Where higher strength matters more than corrosion, switch to plated alloy-steel class 8.8 or 10.9.
Sizes of Spring (Roll) Pin — ISO / DIN (Series 103) Available in A2 Stainless Steel
| Nominal diameter (mm) | Length L (mm) | Recommended hole (mm) | Material | Reference standard |
|---|---|---|---|---|
| 2 | 12 | 2.0 | Spring steel | ISO 8748 / DIN 1481 |
| 3 | 16 | 3.0 | Spring steel | ISO 8748 / DIN 1481 |
| 4 | 20 | 4.0 | Spring steel | ISO 8748 / DIN 1481 |
| 5 | 25 | 5.0 | Spring steel | ISO 8748 / DIN 1481 |
| 6 | 32 | 6.0 | Spring steel | ISO 8748 / DIN 1481 |
| 8 | 40 | 8.0 | Spring steel | ISO 8748 / DIN 1481 |
| 10 | 50 | 10.0 | Spring steel | ISO 8748 / DIN 1481 |
| 12 | 63 | 12.0 | Spring steel | ISO 8748 / DIN 1481 |
| 16 | 80 | 16.0 | Spring steel | ISO 8748 / DIN 1481 |