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  Carbon Steel Plate Manufacturer
    
 
Carbon Pressure Vessel Steel Plate
 

High Tensile Steel Plate

Works Designation

MAXIL 690 Q / MAXIL 690 QL / MAXIL 690 QL1
DIN EN S 690 Q / S 690 QL / S690 QL1

Condition of Delivery
Water quenched and tempered.
Typical Applications

Heavy road vehicles: chassis, dumper bodies.  Cranes construction: booms of mobile cranes.  Structural steelworks: bridge components, components for offshore structures.  Pressure vessels: fixed and transportable storage tanks, vessels.  Power plants: penstocks, spiral cases.  Mining equipment: roof supports etc.

Chemical Composition (Heat analysis in %)

 C

 Si

 Mn

 P

 S

 Cr

 Mo

 Ni

 Al

0.20max.

0.80max.

1.70max.

0.020max.

0.015max.

1.50max.

0.70max.

1.50max.

0.015max.

In addition: Ti or/and V or/and Nb.

The manufacturer reserves the right to change the chemical composition.

Mechanical Properties

Plate  thickness mm

Re MPa

Rm MPa

A %

≤ 50

690

770 - 940

14

> 50 ≤ 100

650

760 - 930

14

> 100

630

710 - 900

14

Notch Impact Energy

Steel Grade

Position of Samples

0°C

- 20°C

- 40°C

- 60°C

S690Q

Longitudinal

Transverse

40 J

30 J

30 J

27 J

 

 

S690QL

Longitudinal

Transverse

50 J

35 J

40 J

30 J

30 J

27 J

 

S690QL1

Longitudinal

Transverse

60 J

40 J

50 J

35 J

40 J

30 J

30 J

27 J





Number of Tests

Tensile test and impact test (3 samples), every 40 t, or per heat treatment unit respectively.

Processing

Cold-Forming

The steel is suitable for cold-forming adhering to a bending or folding radius of > 4 times plate thickness longitudinal and > 3 times transverse to rolling direction. A subsequent stress relief annealing is possible up to a temperature of 580°C.

Hot-Forming

Hot-forming above 580°C is possible. A subsequent quenching and tempering has to be carried out according to the conditions of delivery.

Milling

Drilling with cobalt-alloyed high-speed steels HSSCO.  Cutting speed should be approximately 17 - 19 m/min.

If HSS drills are used, cutting speed should be approximately 3 – 5 m/min.

Flame-Cutting

Material with temperatures under 5°C and thicknesses ≤ 40mm should be preheated to RT. Plate thicknesses > 40mm should be preheated to 100°C, 80mm and over should be preheated to 150°C.

Welding

The steel is suitable for all current welding methods.  In principle, preheating is not necessary for thicknesses up to 30mm.

The following preheating temperatures are recommended:

20mm – 40mm:             75°C

Over 40mm:                   100°C

60mm and over: 150°C

Material with temperatures under 5°C should be preheated to RT for plate thicknesses < 20mm.  Interpass temperature should be between 150°C and 225°C.  These indications are standard values only, in principle,        

in accordance of SEW 088 should be adhered to.

Depending on the welding method, the  t 8/5 times should be between 5 - 25 s.  If stress relief annealing should be necessary for constructional reasons, it should be in the temperature range of 530°C - 580°C.

Filler:

Welding Method

  Type of Filler

 

Manual

  FOX EV 85, FOX U 100 N                              DIN 8529, AWS A 5.5

  OK 75.75

Böhler

ESAB

UP

  U 100-UP, NiCrMo 2,5-UP//BB24               DIN 32522, AWS A 5.23

  OK Autrod 13.44/OK Flux 10.62

Böhler

ESAB

MAG

  70-IG/M21                                                                      AWS A 5.28

  OK Autrod 13.29, OK Tubrod 14.03

Böhler

ESAB



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