Q215 Steel, Q215A, Q215B Chemical Composition, Properties & Equivalent

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Steel bar made from Q215 steel
Steel bar made from Q215 steel

Q215 steel is a Chinese carbon structural steel, divided into 2 quality grades: Q215A and Q215B, material density is 7.85 g/cm3. “Q” is the first letter of Chinese spelling of “Qu Fu Dian”, translated as Yield Strength, “215” is a abbreviation for the unit value “215 MPa”, the tensile strength is 315-430 N/mm2, technical specifications are tested with 16mm diameter steel bars or steel plates.

The latest standard of Q215 steel is GB/T 700-2006, the chemical composition and physical properties are equivalent to ASTM A283/A283M Grade C, ASTM A1011/A1011M CS Type B; JIS G3101 SS330, JIS G3131 SPHC.

For Q215 material main characteristics and uses, please refer to Q195.

Q215 Chemical Composition

Chemical Composition %
Steel GradeSteel GradeC (≤)Si (≤)Mn (≤)P (≤)S (≤)Deoxidation
Q215Q215A0.150.351.20.0450.050Rimmed / Killed
Q215B0.150.351.20.0450.045

Quality Grade: A < B < C < D

Q215 Steel Mechanical Properties

Steel GradeQualityYield Strength (≥N/mm2)Tensile Strength (N/mm2)Elongation (≥%)Impact Test (V notch)
Thickness or Dia. Ø mmThickness or Dia. Ø mmTemp. ℃Absorbed Energy (Vertical, ≥J)
Ø ≤1616 < Ø ≤ 4040 < Ø ≤ 6060 < Ø ≤ 100100 < Ø ≤ 150150 < Ø ≤ 200Ø ≤4040 < Ø ≤ 6060 < Ø ≤ 100100 < Ø ≤ 150150 < Ø ≤ 200
Q215Q215A215205195185175165335 – 4503130292726
Q215B+2027

Q215 Steel Bending Test Results

Cold Bending Test 180° (B=2a)
GradeSample OrientationSteel Ø of Curve Center
≤ 60mm60 < Ø ≤ 100
Q215Vertical0.5a1.5a
Horizontala2a
B= Sample Steel Width; a= Sample Diameter or Thickness

Q215 Equivalent

Q215 steel equivalent to US ASTM, Japan JIS, UK BSI Standards

You may also be interested in Q215 vs Q195, Q235 and Q275 Steel

Equivalent (For reference)
ChinaUSAJapanUK
StandardGradeStandardGradeStandardGradeStandardGrade
GB/T 700Q215AASTM A283/A283M;
ASTM A1011/A1011M
Grade C;
CS Type B
JIS G3101;
JIS G3131
SS330;
SPHC
BS 970-1040A12
Q215BASTM A283/A283M;
ASTM A1011/A1011M
Grade C;
CS Type B
JIS G3101
JIS G3131
SS330;
SPHC
BS 970 Prat 1040A12

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