Corrugated Board Grade performance specification.

  • Grade Code prefix letters show flute (eg “BC:” = “BC flute”).
  • Numeric Digits indicate the industry’s traditional nominal liner weight code for the equivalent perfomance grade.
  • Suffix letters indicate Top & Bottom liner paper types. eg:  K = Kraft paper liner, T & L = Testliner recycled paper liners & W = White liner.

Note: Kraft paper liner consisits of both a 100% virgin paper top ply (from sustainably managed softwood forests) and a base ply incorporating both virgin and  good quality recycled paper fibres. Testliner grades use 100% recycled material with the L grade having the better recycled base material content with stronger fibres and a smoother surface.

All grades are subject to availability and superior grades can be substituted for supply chain expediency unless otherwise directed.

Board Specification

GradeTarget ECT (kN/M)Typcial Burst Value (KPa)Typical g/m2
B:125T.T3.0300269
B:125L.T3.4440280
B:150T.T3.7520325
B:150L.T4.0560340
B:200T.T4.2590386
B:200L.T4.3620400
B:125K.T3.5650294
B:150K.T3.9730325
B:200K.T4.6930417
B:300K.T5.51290550
B:125K.K3.7860309
B:150K.K4.01020340
B:200K.K4.51300400
B:300K.K5.51820505
B:125W.T3.5730304
B:150W.T3.9820355
B:180W.T4.5880390
C:125L.T3.4440289
C:150T.T3.8480309
C:150L.T4.0500330
C:200T.T4.2530378
C:200L.T4.4560390
C:125K.T3.5650304
C:150K.T3.9760339
C:200K.T4.4790400
C:300K.T5.91390600
C:150K.K4.11020369
C:200K.K4.81300439
C:300K.K5.61820599
C:150W.T4.0905364
C:180W.T4.41120400
E:125T.T2.3440270
E:125L.T2.7480292
E:125K.T2.8650291
E:150K.T3.2730330
E:200K.T3.9930413
E:150K.K3.2860325
E:200K.K4.01160428
E:125W.T2.8730301
E:150W.T3.5790363
E:180W.T3.91020413
E:125W.W3.21020326
E:150W.W3.61140363
E:180W.W4.01480426
BC:125L.T4.2440472
BC:150T.T4.7500492
BC:150L.T4.9620510
BC:200T.T5.1645527
BC:200L.T5.5670584
BC:125K.T4.6650482
BC:150K.T5.3680528
BC:200K.T5.8800560
BC:300K.T6.51450774
BC:125K.K4.8860508
BC:150K.K5.21020558
BC:200K.K5.71200614
BC:300K.K6.71300749
BC:150D.T5.1570537
BC:125W.T4.7730503
BC:150W.T5.3730542
BC:180W.T5.8880629
EB:125L.T4.5500468
EB:150T.T4.8560500
EB:150L.T5.1660528
EB:200L.T5.5720563
EB:125K.T4.5650480
EB:150K.T5.1730518
EB:200K.T5.71135578
EB:150D.T5.0570523
EB:125W.T4.5730490
EB:150W.T5.0820554
EB:180W.T5.51135578
Corrugated board material expected performance measures.

Figures shown are for industry standard lightweight containerboard fluting (typically 90g/m2 nominal weight).

Board ECT and Burst strengths can improve significantly for board specifications incorporating Enhanced or Heavy weight fluting.