{"id":12227,"date":"2026-06-12T04:52:32","date_gmt":"2026-06-12T04:52:32","guid":{"rendered":"https:\/\/nylonplastic.com\/basf-ultramid-b3eg6-alternative-pa6-gf30-equivalent\/"},"modified":"2026-06-12T05:08:26","modified_gmt":"2026-06-12T05:08:26","slug":"basf-ultramid-b3eg6-alternative-pa6-gf30-equivalent","status":"publish","type":"post","link":"https:\/\/nylonplastic.com\/pt\/basf-ultramid-b3eg6-alternative-pa6-gf30-equivalent\/","title":{"rendered":"BASF Ultramid B3EG6 Alternative Guide: Equivalent PA6 GF30 Grades"},"content":{"rendered":"
\"PA6<\/figure>\n\n\n\n\n\n
\"BASF<\/figure>\n\n\n\n

BASF Ultramid B3EG6 is one of the most widely specified PA6 GF30 grades in the world. It is the go-to reference for 30% glass fiber reinforced nylon 6 \u2014 used in automotive under-hood components, electrical housings, consumer durables, and general industrial parts. If you are reading this, you are probably sourcing B3EG6 and hitting one of three problems: the lead time is too long, the price from your current supplier just increased, or you need an equivalent that ships from a different geography. This guide covers the technical requirements for a true B3EG6 alternative, the key properties to verify, and the available equivalent grades.<\/p>\n\n\n\n

What Makes B3EG6 the Reference Grade<\/h2>\n\n\n\n

Before looking for an alternative, understand what B3EG6 is. It is a PA6 (polyamide 6) injection molding compound with 30% glass fiber reinforcement, heat-stabilized for continuous use at elevated temperatures. The key datasheet values that define the grade are:<\/p>\n\n\n\n

Im\u00f3veis<\/th>Ultramid B3EG6 Value (dry, 23 C)<\/th>Norma de ensaio<\/th><\/tr><\/thead>
Tensile Modulus<\/td>10,000 MPa<\/td>ISO 527-1\/-2<\/td><\/tr>
Tensile Strength at Break<\/td>185 MPa<\/td>ISO 527-1\/-2<\/td><\/tr>
Charpy Notched Impact<\/td>15 kJ\/m2<\/td>ISO 179\/1eA<\/td><\/tr>
Charpy Unnotched Impact<\/td>90 kJ\/m2<\/td>ISO 179\/1eU<\/td><\/tr>
HDT at 1.8 MPa<\/td>200 C<\/td>ISO 75-1\/-2<\/td><\/tr>
Melting Temperature (DSC)<\/td>220 C<\/td>ISO 11357-1\/-3<\/td><\/tr>
Densidade<\/td>1.36 g\/cm3<\/td>ISO 1183<\/td><\/tr>
Molding Shrinkage (parallel\/normal)<\/td>0.30 \/ 0.90 %<\/td>ISO 294-4<\/td><\/tr><\/tbody><\/table>
Key mechanical and thermal properties of Ultramid B3EG6 (conditioned dry). These are the benchmark values an alternative grade must meet or approach.<\/figcaption><\/figure>\n\n\n\n

B3EG6 is also available in variants: B3EG6 BK (black), B3EG6 LS (light-stabilized for outdoor use), and B3EG6 FC (food contact). When you specify an alternative, make sure the variant aligns with your actual requirement \u2014 not all alternatives carry every variant certification.<\/p>\n\n\n\n

What to Verify When Qualifying an Alternative<\/h2>\n\n\n\n

Switching from B3EG6 to an alternative grade is not just about matching datasheet numbers. Here is what buyers and engineers should verify:<\/p>\n\n\n\n

1. Heat Aging Performance<\/h3>\n\n\n\n

B3EG6 uses a copper-based heat stabilization system that provides excellent long-term thermal aging resistance. An alternative grade should demonstrate comparable tensile strength retention after heat aging \u2014 typically 1000 hours at 140-150 C with at least 70% tensile retention as a minimum benchmark. Some lower-cost alternatives skimp on the heat stabilizer package, which shows up as premature embrittlement after a few hundred hours at temperature. This matters most for under-hood automotive parts.<\/p>\n\n\n\n

2. Shrinkage and Molding Behavior<\/h3>\n\n\n\n

The shrinkage values on the datasheet (0.30% parallel, 0.90% normal for B3EG6) describe the material’s behavior in a standardized test mold. An alternative grade with different shrinkage values will produce different part dimensions in your existing mold. If the alternative shrinks less than B3EG6, the part will be larger and may not fit. If it shrinks more, it will be smaller and may rattle or leak. Always run a molding trial and measure part dimensions before committing to a material change. A datasheet match is not a dimensional guarantee.<\/p>\n\n\n\n

3. Color and Appearance<\/h3>\n\n\n\n

B3EG6 in natural color is a translucent off-white. Black variants use carbon black masterbatch. If your application requires a specific color, verify that the alternative supplier’s color matching matches your existing parts \u2014 especially for consumer-facing components where a shade difference will be visible.<\/p>\n\n\n\n

4. Certification and Documentation<\/h3>\n\n\n\n

B3EG6 carries multiple certifications depending on the variant: UL Yellow Card (UL 94 HB), food contact statements (EU, FDA), and automotive OEM approvals (VW, Daimler, BMW, etc.). If your application relies on a specific certification, the alternative grade must carry the same one. A grade that is “equivalent in mechanical properties” but lacks your OEM’s approval is not an equivalent for your supply chain.<\/p>\n\n\n\n

Available PA6 GF30 Alternatives to B3EG6<\/h2>\n\n\n\n

Several established global and Asian suppliers produce PA6 GF30 grades that overlap with B3EG6 specifications. Here are the most commonly cross-referenced alternatives:<\/p>\n\n\n\n

Supplier<\/th>Grau<\/th>Closest B3EG6 Match<\/th>Key Differences<\/th><\/tr><\/thead>
DuPont (Celanese)<\/td>Zytel 73G30L NC010<\/td>Direct equivalent<\/td>Slightly higher tensile (190 vs 185 MPa); different heat stabilizer chemistry; excellent global availability<\/td><\/tr>
Lanxess<\/td>Durethan BKV30H2.0<\/td>Direct equivalent, heat-stabilized<\/td>Comparable mechanicals; well-established in European automotive; H3.0 variant for improved flow<\/td><\/tr>
Domo<\/td>Domamid 6G30H<\/td>Heat-stabilized GF30<\/td>European production; strong in electrical\/electronics; competitive pricing vs BASF<\/td><\/tr>
Radici<\/td>Radilon A RV300RK<\/td>Heat-stabilized GF30<\/td>Italian production; well-established in European appliance and automotive supply chains<\/td><\/tr>
Asahi Kasei<\/td>Leona 15G30<\/td>Heat-stabilized GF30<\/td>Asian supply base; surface appearance differences possible; verify shrinkage<\/td><\/tr>
Mitsubishi<\/td>Novamid 1015G33<\/td>33% GF (slightly higher filler)<\/td>Higher modulus, slightly lower impact than B3EG6; 3% extra filler may affect shrinkage<\/td><\/tr><\/tbody><\/table>
Global PA6 GF30 grades commonly cross-referenced against B3EG6. All listed grades are heat-stabilized for elevated temperature service. Always request the full datasheet and run a molding trial before switching.<\/figcaption><\/figure>\n\n\n\n

Why Consider a Non-BASF Alternative<\/h2>\n\n\n\n

BASF makes an excellent product. But sourcing exclusively from one supplier on one grade creates supply chain risk. Here are the practical reasons buyers explore alternatives:<\/p>\n\n\n\n