意味と目的
3.1 半世紀以上にわたって, the Sward type hardness rocker instruments have been used by the coating industry as NDE instruments to measure the cured and final surface hardness of organic coatings (参考文献を参照). (1) through (2)). This test method can be used in the laboratory to quickly screen and measure the surface hardness of candidate coatings.

注記 1: In a previous task group aimed at establishing an ASTM method for measuring the hardness of organic coatings using a Sward type hardness rocker arm instrument, cyclic test results consistently showed poor inter-laboratory reproducibility. The lack of inter-laboratory agreement may be caused by dimensional differences between instruments, and in this regard contact with the rocker arm ring is a very likely violator. Several manufacturers of the Sward type hardness rocker produce instruments that vary in net weight and ring radius. Some of them exceed the measured values and net weights required in this test method.

ASTM D 2134-93-2019 スワルト型硬度計を使用した有機コーティングの硬度の測定

の範囲
1.1 The test method covers the determination of the relative degree of surface hardness of organic coatings using specific equipment used in the coating industry.

1.2 SI単位で表した値を基準とします。. 括弧内の値は参考値です。.

1.3 This test method is not intended to address all safety issues, もしあれば, その使用に関連する. 適切な安全性を確立するのは、この規格の使用者の責任です。, 健康および環境慣行を確認し、使用前に規制制限の適用可能性を判断するため.

1.4 この国際規格は、国際規格開発の原則に関する決定で確立された国際的に認められた標準化原則に従って開発されました。, 世界貿易機関の貿易の技術的障壁に関する委員会が発行したガイドラインと勧告.