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DIN Series Precision
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   Site:Home >> Products Showing >> DIN Series Precision Steel Tube >> Technical Specification >> Chemical composition table

Chemical composition table (China, Baosteel, Germany, Europ comparison)

  Steel Grade C Si Mn P S Cr Ni Cu
          max max max max max
GB699-88 10# 0.07~0.14 0.17~0.37 0.35~0.65 0.035 0.035 0.25 0.25 0.25
Q/BQB203-94 St37.0 ≤0.17 0.17~0.37 0.35~0.65 0.035 0.035 0.25 0.25 0.25
DIN2391-94 St35 ≤0.17 ≤0.35 ≥0.4 0.025 0.025 -- -- --
EN 10305-1 E235 ≤0.17 ≤0.35 ≤1.2 0.025 0.025 -- -- --
DIN 1630 St37.4 ≤0.17 ≤0.35 ≥0.35 0.04 0.04      
 
  Steel Grade C Si Mn P S Cr Ni Cu
          max max max max max
GB699-88 20# 0.17~0.24 0.17~0.37 0.35~0.65 0.035 0.035 0.25 0.25 0.25
Q/BQB203-94 St45 0.25 0.15~0.35 0.50~0.80 0.035 0.035 0.25 0.25 0.25
DIN2391-94 St45 ≤0.21 ≤0.35 ≥0.4 0.025 0.025 -- -- --
EN 10305-1 E255 ≤0.21 ≤0.35 0.40~1.10 0.025 0.025 -- -- --
 
  Steel Grade C Si Mn P S Cr Ni Cu
          max max max max max
GB1591-88 16Mn ≤0.2 ≤0.55 1.0~1.60 0.035 0.035 0.25 0.25 0.25
Q/BQB203-94 St52 ≤0.2 ≤0.55 ≤1.5 0.035 0.035 0.25 0.25 0.25
DIN2391-94 St52 ≤0.22 ≤0.55 ≤1.6 0.025 0.025 -- -- --
EN 10305-1 E355 ≤0.22 ≤0.55 ≤1.6 0.025 0.025 -- -- --
DIN 1630 St52.4 ≤0.22 ≤0.55 ≤1.6 0.04 0.035      
 
  Steel Grade C Si Mn P S Cr Ni Cu
          max max max max max
GB699-88 35# 0.32~0.40 0.17~0.37 0.50~0.80 0.035 0.035 0.25 0.25 0.25
Q/BQB203-94 St55 0.33~0.41 0.15~0.35 0.50~0.80 0.035 0.035 0.25 0.25 0.25
 
  Steel Grade C Si Mn P S Cr Ni Cu
          max max max max max
GB699-88 45# 0.42~0.50 0.17~0.37 0.50~0.80 0.035 0.035 0.25 0.25 0.25
Q/BQB203-94 CK45 0.42~0.50 0.17~0.37 0.50~0.80 0.035 0.035 0.25 0.25 0.25


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