Technical datasheet
OnFlex™ S FR 70A-3S1890
Supplied byAvient (Formerly PolyOne)- Last Updated on Jul 13, 2026
OnFlex™ S FR 70A-3S1890 by Avient (Formerly PolyOne) is a general purpose, hydrogenated styrenic block copolymer (SBC). This halogenated & flame retardant grade exhibits very wide hardness range, excellent mechanical properties, good processability and elevated temperature compression set performance. It is processed by injection molding. OnFlex™ S FR 70A-3S1890 is recommended for business equipment, automotive, industrial, electrical and electronic applications. It complies with RoHS.
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OnFlex™ S FR 70A-3S1890 properties
Flammability properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Flame Rating, UL 94 | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Glow Wire Flammability Index (GWFI) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Limiting Oxygen Index (LOI) | 0.0 Visible After Login | Visible After Login | Visible After Login |
Mechanical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| 100% Modulus | 0.0 Visible After Login | Visible After Login | Visible After Login |
| 300% Modulus | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Compression Set | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Compression Set | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Compression Set | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Elongation at Break | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hardness, Shore A | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tear Strength | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Strength at Break | 0.0 Visible After Login | Visible After Login | Visible After Login |
Physical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
OnFlex™ S FR 70A-3S1890 Processing Guidelines
Injection Molding Processing Guidelines
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Injection Rate | Visible After Login | Visible After Login | |
| Melt Temperature | Visible After Login | Visible After Login | |
| Mold Temperature | Visible After Login | Visible After Login | |