GB/T 5686.9-2023

Ferromanganese,ferromanganese-silicon,nitrogen-bearing ferromanganese and manganese metal—Determination of manganese,silicon,phosphorus and iron content—Wavelength dispersive X-ray fluorescence spectrometry(Fused cast bead method)

锰铁、锰硅合金、氮化锰铁和金属锰 锰、硅、磷和铁含量的测定 波长色散X射线荧光光谱法(熔铸玻璃片法)