STOMANA Quarto Plates program includes common structural grades as well as grades for special requirements. With a thickness range from 7mm (0,275”) to 40mm (1,574”), plate width up to 2.5m (98.4”) and maximum individual plate length up to 12,7m (500”) we cover the majority of design applications. STOMANA plates can be supplied in different delivery conditions and comply with various inspection requirements.
 
Grades - Standards

Carbon Structural Steels

  • ASTM A36 / ASTM A36
 

High strength Structural Steels

  • ASTM A572 GR50, (TYPE 2)
  • ASTM A572 GR60, (TYPE 2)
 

Structural steels for Bridges

  • ASTM A709 GR50
 

Steels for Pressure vessels

  • ASTM A516 GR60
 

Weathering Steels

  • ASTM A588 Grade A
 

Steels for Shipbuilding

  • ASTM A131 (Grades A, B, AH32, DH32, AH36, DH36 with MTS 3.1 only)
 

Material Test Certificates 3.1 and 3.2

  • Grade A (DNV, Lloyds Register, ABS, Bureau Veritas, Germanischer Lloyd)
  • Grade B (DNV)
  • Grade AH32, DH32, AH36, DH36 (Lloyds Register) - (8mm-25mm) (5/16” - 1”)

Other grades and specifications not listed above, can be produced upon request
Sizes
Standard sizes:
  Width in Inches 
Plate Gauges 48 60 72 84 96
Maximum Length in Inches
5/16 0.3125 500 500 500 500 500
3/8 0.3750 500 500 500 500 500
7/16 0.4375 500 500 500 500 500
1/2 0.5000 500 500 500 500 500
9/16 0.5625 500 500 500 500 500
5/8 0.6250 500 500 500 500 500
11/16 0.6875 500 500 500 500 500
3/4 0.7500 500 500 500 500 480
1 1.0000 500 500 480 412 360
1 1/8 1.1250 500 500 427 366 320
1 1/4 1.2500 500 461 384 329 288
1 1/2 1.5000 480 384 320 275 240
1 5/8 1.6250 443 355 296 253 222
 
Max PL Wt. ~5000 Kgs
~11023 Lbs
 
  • Non-standard sizes
    The mill can produce special cut-to-length sizes (width and length) upon request.
  • We can also produce other thicknesses than the ones listed above upon confirmation. 
Technical delivery conditions

General

  • Chemical properties on ladle heat analysis as per ordered standard
  • Mechanical properties according to ordered standards
  • Sizes, tolerances and surface properties  according to relevant standards
  • Four- cut edges
 

Ultrasonic testing

  • Ultrasonic testing according to EN 10160 or equivalent standards by qualified personnel
  • E0/S0, E1/S1 or E2/S2 compliance depending on thickness and grade
  • Ultrasonic test full reports
 

Marking

  • Standard paint marking and Labels indicating: country of origin, STOMANA logo, size, quality standard, plate number and heat number, CE mark acc. to EN10025-1, if applicable.
  • Standard hard stamping, indicating: plate number, grade, STOMANA logo and special marking upon request
  • Color marking upon request, on the edges of the plates, one or two sides
 

Quality Certificates

  • Mill's quality certificates according to the material standards. Certificate type 2.2, 3.1 or 3.2 according to EN 10204.
  • Certification by Lloyds Register, Germanischer Lloyd, DNV, ABS, Bureau Veritas for shipbuilding steel plates
  • Certification for multiple grade: single, double, triple certification
  • Third party inspection can be arranged upon request
 

Additional requirements

  • Suitability for cold forming
  • Suitability for galvanizing
  • Z tests
  • Vacuum Degased
  • Additional mechanical tests