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Carbon Steel Precision Casting Q235B

Carbon Steel Precision Casting Q235B

Carbon content less than 1.35% (0.1% -1.2%), in addition to iron, carbon and silicon less limited, manganese, phosphorus, sulfur and other impurities, without other alloying elements. The property of carbon steel depends on the carbon content. The carbon content increases the strength of steel, increased hardness, ductility, toughness and weldability decrease. Compared with other types of steel, carbon steel is of the earliest use, low cost, wide property range, the largest use amount.

Chemical composition unit of precision castings Q235B

Symbol	Chemical composition
Symbol	C max	Si max	Mn max	P max	S max
Q235B	0.12~0.20	0.30	0.30~0.70	0.045	≤0.045

Mechanical properties of precision castings Q235B

Symbol

Yield point or proof stress

N/mm2 (min)

Tensile strength

N/mm2 min

Elongation % min

According to the contract

Transverse Shrinkage

Z/%

Impact Toughness

KU₂/J

Q235B

225

375-500

Dimensional Tolerance of precision castings Q235B

Casting

Dimensions(mm)

＞

25~40

＞

40~63

＞

63~100

＞100~160

＞

160~250

＞

250~400

＞

400~630

＞

630~1000

＞

1000~1600

＞16~2500

Sand Casting

Major unit

0.9

1.0

1.1

1.3

1.4

1.6

1.8

2.0

2.3

2.7

Minor unit

±1.8

2.0

2.2

2.5

2.8

3.1

3.5

4.0

4.5

5.0

Investment Casting

CT7

0.45

0.50

0.55

0.6

0.7

0.8

0.9

1.0

1.1

1.3

Carbon Steel Precision Casting Q235B is mainly used in Auto machine manufacturing industries.Henan Sebon Industries Co., LTD is one of the leading casting company in China.We are a manufacturer for precision castings and produce castings for auto,moto,railway and shipping ,including construction machinery castings ,mining machinery castings and engineering machinery castings.We mainly use the two foundry technology ,sodium silicate investment casting process and silicon sol solution casting process.