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Heat Exchanger Tube & Pipes   ASTM A179   Chemical Composition Grade C % Mn % P % S % SA 179 0.06-0.18 0.27-0.63 0.035 max 0.035 max   Mechanical Properties Grade Tensile Strength MPA Yield Strength MPA Hardness HRB SA 179 325 min 180 min 72 max   ASTM A213   Chemical Composition Grade C % Si % Mn % P % S % Ni % Mo % Cr % V % N % Al % T5 0.15 max 0.50 max 0.30-0.60 0.025 max 0.025 max / 0.45-0.65 4.00-6.00 / / / T9 0.15 max 0.25-1.00 0.30-0.60 0.025 max 0.025 max / 0.90-1.10 8.00-10.0 / / / T11 0.05-0.15 0.50-1.00 0.30-0.60 0.025 max 0.025 max / 0.44-0.65 1.00-1.50 / / / T12 0.05-0.15 0.50 max 0.30-0.61 0.025 max 0.025 max / 0.44-0.65 0.80-1.25 / / / T22 0.05-0.15 0.50 max 0.30-0.60 0.025 max 0.025 max / 0.87-1.13 1.90-2.60 / / / T91 0.08-0.12 0.20-0.50 0.30-0.60 0.020 max 0.010 max 0.40 max 0.85-1.05 8.00-9.50 0.18-0.25 0.03-0.07 0.04 max   Mechanical Properties Grade Tensile Strength MPA Yield Strength MPA Hardness HB T5 415 min 205 min 163 max T9 415 min 205 min 179 max T11 415 min 205 min 163 max T12 415 min 220 min 163 max T22 415 min 205 min 163 max T91 585 min 415 min 250 max   ASTM A334   Chemical Composition Grade C % Si % Mn % P % S % 1 0.30 max / 0.40-1.06 0.025 max 0.025 max 6 0.30 max 0.10 min 0.29-1.06 0.025 max 0.025 max   Mechanical Properties Grade Tensile Strength MPA Yield Strength MPA 1 380 min 205 min 6 415 min 240 min

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