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Descriptions and specifications: CHEMICAL COMPOSITION International Standards as follows: R50 51,67 kg/m GOST 7173-75 C: 0.67 - 0.82 % Mn: 0,75 - 1.05 % Si: 0.18% - 0.40%; P: max. 0.035 % S: max. 0.045 % As: max. 0.15 % Max of Mass Share; Cr: Residual. R65 64.72 kg/m GOST 8165-75 C: 0.67 - 0.82 % Mn: 0,75 - 1.05 % Si: 0.18% - 0.40%; P: max. 0.035 % S: max. 0.045 % As: max. 0.15 % Max of Mass Share; LOADING PORT: IS DURBAN, SOUTH AFRICA INSTRUMENT: PREFER BG, SBLC OR TRANSFERRABLE LC .