Foundry Division

Materials

Steel castings

Constructional steels: Machine building, offshore and valves

 

Peiron Oy Construction steel

Standard

Alloy symbol

 

C %

Si %

Mn %

P %

S %

Cr %

Cu %

SFS 365

G-20Mn5

min

max

 

0.20

 

0.60

 

1.5

 

0.035

 

0.035

 

0.30

 

0.40

SFS 357

G-26-52

min

max

Keskim. 0.25

(0.5)

 

(0.7)

 
 

0.040

 

0.040

  

SFS 356

G-23-45

min

max

 

0.25

(0.5)

 

(0.7)

 
 

0.040

 

0.040

  

Guaranteed mechanical characteristics

Standard

The condition of delivery

Yield point Rel min. N/mm²

Tensile strength Rm min. N/mm²

Elongation A5 min %

Reduction of area Z N/mm²

Impact strength kV

Hardness HB

min J

°C

SFS 365

01

04

290

290

490

490

18

18

35

35

(28)

(28)

(-40)

(-40)

140-180

140-180

SFS 357

 

260

520 – 670

18

25

22

20

(150)

SFS 356

 

230

450 – 600

22

31

25

20

(130)

Condition of delivery 01 is normalized.

Condition of delivery 04 is tempered to balance.

Figures in brackets are not binding.

Mechanical characteristics will be defined from separate samples or from samples that are cast together. The form of samples is according to SFS 351 and measures according to SFS 3077.

Welding

The welding of SFS-365 requires a 100°C pre-heating. As an ingredient a non-blended or an Mn-blended ingredient is to be used. After welding a heat-treatment of 500-650°C is required. Welding of SFS 357 requires a pre-heating of 200-300°C. After welding SFS 357 requires a tension removing and normalization tempering. SFS 356 can be welded by common welding methods. After large-scale welding a tension removing and normalization tempering is required.

Equivalence of standards

G-20Mn5
Country
Standard
Alloy symbol
Sweden
SIS 14 21 72
SS 21 72
Germany
DIN 17245
GS-C25
USA
ASTM A 352
LCC
Russia
COST 21357-75
20 GLS
G-23-45
Country
Standard
Alloy symbol
Sweden
SIS 14 13 05
SS 13 05
Germany
DIN 1681-1967
GS-45
USA
ASTM A 27
65-35
Russia
COST 977-75
20 L
G-26-52
Country
Standard
Alloy symbol
Sweden
SIS 14 15 05
SS 15 05
Germany
DIN 1681-1967
GS-52
USA
ASTM A 27
70-36
Russia
COST 977-75
35 L

Contacs

PEIRON OY STEEL FOUNDRY
P.O. Box 88
FI-32801 Kokemäki
FINLAND
Tel: +358 20 750 9400
E-mail: info@peiron.com 

Contact Sales Regarding Kumera Peiron Foundry 

Peiron Oy Steel & Iron Foundry - Finland