{"id":5947,"date":"2026-05-19T02:52:11","date_gmt":"2026-05-19T02:52:11","guid":{"rendered":"https:\/\/nylonplastic.com\/pla-plus-vs-pla-strength-heat-resistance-print-quality\/"},"modified":"2026-05-19T06:03:34","modified_gmt":"2026-05-19T06:03:34","slug":"pla-plus-vs-pla-strength-heat-resistance-print-quality","status":"publish","type":"post","link":"https:\/\/nylonplastic.com\/de\/pla-plus-vs-pla-strength-heat-resistance-print-quality\/","title":{"rendered":"PLA+ vs PLA: Strength, Heat Resistance and Print Quality Compared"},"content":{"rendered":"
\n \"PLA+
PLA+ vs PLA: laboratory-grade testing reveals comprehensive property differences<\/figcaption><\/figure>\n

When engineers compare pla+ vs pla for real-world applications, they need more than anecdotal experience. They need quantified data on strength, thermal behavior, and print quality. This article provides a detailed, data-driven comparison of the mechanical and thermal properties that matter most for functional 3D printed parts.<\/p>\n

PLA+ vs PLA: Tensile Strength Comparison<\/h2>\n

Tensile strength measures how much pulling force a material can withstand before breaking. In the pla+ vs pla comparison, this is where the most consistent difference appears:<\/p>\n\n\n\n\n\n\n\n\n
Test Specimen<\/th>\nStandard PLA<\/th>\nPLA+ (Brand A)<\/th>\nPLA+ (Brand B)<\/th>\n<\/tr>\n<\/thead>\n
Tensile at Yield<\/td>\n48-52 MPa<\/td>\n52-58 MPa<\/td>\n55-62 MPa<\/td>\n<\/tr>\n
Tensile at Break<\/td>\n42-48 MPa<\/td>\n48-55 MPa<\/td>\n50-58 MPa<\/td>\n<\/tr>\n
Young’s Modulus<\/td>\n3.0-3.5 GPa<\/td>\n2.8-3.3 GPa<\/td>\n2.9-3.4 GPa<\/td>\n<\/tr>\n
Dehnung beim Bruch<\/td>\n3-5%<\/td>\n7-15%<\/td>\n10-18%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The critical insight in pla+ vs pla tensile testing is elongation at break. Standard PLA behaves like a ceramic\u2014it snaps suddenly with minimal strain warning. PLA+ stretches before breaking, giving it a “failure window” that allows visual inspection before catastrophic part failure. This property alone makes PLA+ preferable for any part that will bear load.<\/p>\n

\n \"PLA+
Stress-strain curves reveal the ductile behavior of PLA+ vs the brittle failure of standard PLA<\/figcaption><\/figure>\n

Heat Resistance: The Overlooked Differentiator<\/h2>\n

Heat resistance is measured by the Heat Deflection Temperature (HDT), which indicates the temperature at which a material begins to soften under load. When comparing pla+ vs pla in thermal performance, the differences are modest but can be significant in specific applications.<\/p>\n

Standard PLA begins softening noticeably around 50-55\u00b0C. PLA+ typically adds 3-5\u00b0C to this threshold, reaching 55-60\u00b0C. While this seems minor, it can mean the difference between a part surviving in a hot car in summer (interior temperatures can reach 55-65\u00b0C in direct sunlight) or deforming within minutes. For parts intended for indoor use or temperature-controlled environments, this difference is irrelevant. For automotive interiors, kitchen appliances, or outdoor installations, it becomes critical.<\/p>\n

Impact Resistance and Toughness<\/h2>\n

Impact resistance is the property that most dramatically separates pla+ vs pla. Standard PLA absorbs approximately 4-6 kJ\/m\u00b2 of impact energy before fracturing\u2014roughly comparable to polystyrene. PLA+ absorbs 8-14 kJ\/m\u00b2, placing it closer to ABS in impact performance.<\/p>\n

This 100-150% improvement transforms the practical utility of PLA-based parts. A gear printed in standard PLA will shatter if dropped onto a concrete floor from waist height. The same gear printed in PLA+ will typically survive multiple identical drops. For products shipped to customers, this shock-absorption capability significantly reduces damage during transit.<\/p>\n

\n \"PLA+
Impact testing demonstrates the dramatically improved toughness of PLA+ over standard PLA<\/figcaption><\/figure>\n

Layer Adhesion and Interlaminar Strength<\/h2>\n

Interlayer bonding strength is the Achilles heel of FDM printing, but it is an area where PLA+ excels. Standard PLA achieves 50-60% of its bulk strength across layer boundaries, creating natural fracture planes. PLA+ typically achieves 65-80% interlayer strength\u2014a significant improvement that makes printed parts behave more like homogenous, injection-molded components.<\/p>\n

Print Quality: PLA+ vs PLA Surface Finish<\/h2>\n

At optimized temperatures, PLA+ tends to produce a slightly glossier surface finish than standard PLA. The plasticizers and modifiers in PLA+ promote smoother melt flow, which fills minor gaps between extrusion lines more effectively. However, printing PLA+ at the wrong temperature (too low) magnifies surface defects because the modifiers interfere with proper melt behavior. Always perform temperature tower calibration when switching between PLA and PLA+ brands.<\/p>\n

Why Choose Nylon Plastic for Your 3D Printing and Engineering Plastic Needs<\/h2>\n

With over 10 years of experience in engineering plastics, Nylon Plastic supplies high-performance materials to B2B clients worldwide. Our product range covers nylon (PA6, PA66, PA12), POM, PEEK, and 3D printing filaments including PLA, PLA+, and PETG. Every batch is tested for diameter tolerance (\u00b10.03mm), moisture content, and mechanical properties before shipping.<\/p>\n