Dandong Foundry
About Us Casting Products Casting Workshop Machining Workshop Inspection Certificate Blog ArticlesContact Us
 

ISO 3755 1991 cast carbon steels for general engineering purposes

This international standard specifies requirements for eight grades of heat-treated cast carbon steels for general engineering purposes. They are grade 200-400, 200-400W, 230-450, 230-450W, 270-480, 270-480W, 340-550 and 340-550W. Four of the grades have a restricted chemical composition to ensure uniform weld ability.

Steel used for castings shall conform to the mechanical property requirements given in the following table.

Either reduction of area or impact strength shall be determined and shall conform to the requirements given for the grade in this table. The choice of test will be at the discretion of the manufacturer, unless it is specified by the purchaser at the time of ordering.

Mechanical Property Requirements of Cast Steel Grades on ISO 3755:

Grades

Specimen/mm

Mechanical Properties

σs /MPa

σb /MPa

δ ≥ (%)

φ ≥(%)

A KV / J

200-400
200-400W

28
28

200
200

400~500
400~500

25
25

40
40

30
45

230-450
230-450W

28
28

230
230

450~600
450~600

22
22

31
31

25
45

270-480
270-480W

28
28~40

28
28~40

270
260

270
260

480~630
500~650

480~630
500~650

18
-

18
-

25
-

25
-

22
-

22
-

340-550
340-550W

28
28~40

28
28~40

340
300

340
300

550~700
570~720

550~700
570~720

15
-

15
-

21
-

21
-

20
-

20
-

The steel used for castings shall conform to the chemical composition requirements in this following table.  

The choice of chemical composition in the non-wieldable grades shall be left to the discretion of the manufacturer. For each 0.01% reduction of carbon below 0.25%, an increase of 0.04% manganese above the maximum specified will be permitted, to a maximum of 1.20% for grade 200-400W and to 1.40% for grade 270-480W. 

Maximum content of residual elements, the sum of which shall not exceed 1.00%.  

Chemical Composition Requirements of Cast Steel Grades on ISO 3755: 

Grades

C

Si

Mn

P ≤

S ≤

Cr

Ni

Mo

Others

200-400

200-400W

-

≤0.25

-

≤0.60

-

≤1.00

0.035

0.035

0.035

0.035

-

≤0.35

-

≤0.40

-

≤0.15

-

Cu≤0.40
V≤0.05

230-450

230-450W

-

≤0.25

-

≤0.60

-

≤1.20

0.035

0.035

0.035

0.035

-

≤0.35

-

≤0.40

-

≤0.15

-

Cu≤0.40
V≤0.05

270-480

270-480W

-

≤0.25

-

≤0.60

-

≤1.20

0.035

0.035

0.035

0.035

-

≤0.35

-

≤0.40

-

≤0.15

-

Cu≤0.40
V≤0.05

340-550

340-550W

-

≤0.25

-

≤0.60

-

≤1.50

0.035

0.035

0.035

0.035

-

≤0.35

-

≤0.40

-

≤0.15

-

Cu≤0.40
V≤0.05

Other related standard:

ISO 9477 1992 High strength cast steels for general engineering and structural purposes

 

 Home | More Articles

 
  Gray Iron Castings  |  Ductile Iron Castings  |  Cast Steel Castings  |  Green Sand Iron Castings  |  Furan Resin Sand Castings  |  Automatic Molding Castings  |  Shell Molding Iron Castings  |  Sand Mold Steel Castings  |  Lost Wax Investment Castings  |  Stove & Boiler Metal Parts  |  Construction Machinery Parts  |  Agricultural Machinery Parts  |  Pump & Valve Metal Parts  |  Pipe Fittings & Manholes  |  Other Iron & Steel Castings  |  Prices Per Pound, Kg and Ton  |  Cast iron Price Calculator | Seeding Knife Points  

     © DANDONG FUDING ENGINEERING MACHINERY CO., LTD.  All Rights Reserved
     ADD: No.117, Zhenyang Street, Qianyang Town, Dandong City, Liaoning, P.R. China
     SITEMAP | China Foundry, China Turbocharger