Table 2. Standards and test methods for OSB

	Property		ISO (2009)					JIS (2015)	KDS (2018)			Test method
				GP-REG1) 10-18 mm	LB-REG2) 10-18 mm	LB-MR3) 10-18 mm	HLB-MR4) 10-18 mm	Structural PB/OSB 9 mm	Structural OSB
									≥ 11 mm	≥ 15 mm	≥ 18 mm
ISO	General requirements	Thickness (mm)		± 0.8	± 0.8	± 0.8	± 0.8	-	-			ISO (2003b)
		Moisture content (%)		2-12	2-12	2-12	2-12	-	-			ISO (2003e)
		Tolerance on the mean density within a board (g/cm3, %)		± 15	± 15	± 15	± 15	-	-			ISO (2003a)
		Formaldehyde emission (mg/L)		-	-	-	-	-	-			ISO (2016)
	Requirements for specified mechanical and swelling properties	Bending strength (MPa)	||5)	≥ 18	≥ 20	≥ 20	≥ 28	-	-			ISO(2003d)
			∠6)	≥ 9	≥ 10	≥ 10	≥ 15	-	-
		Modulus of elasticity in bending (MPa)	||	≥ 2,500	≥ 3,500	≥ 3,500	≥ 4,800	-	-
			∠	≥ 1,200	≥ 1,400	≥ 1,400	≥ 1,900	-	-
		Intemal bond (MPa)		≥ 0.28	≥ 0.32	≥ 0.32	≥ 0.45	-	-			ISO (2003h)
		Swelling in thickness (%)		≤ 25	≤ 20	≤ 15	≤ 12	-	-			ISO (2003g)
	Requirements for moisture resistance	Internal bond alter boil test (MPa)		-	-	≥ 0.13	≥ 0.15	-	-			ISO (2003f)
JIS		Bending strength in wet conditions (N/mm2)	||	-	-	-	-	≥ 9	-			ISO (2005)
			∠	-	-	-	-	≥ 9	-			JIS (2015)
		Nail-head pull-through force (kN)		-	-	-	-	≥ 1	-			JIS (2015)
		Lateral nail resistance (kN)	||	-	-	-	-	≥ 1	-			JIS (2015)
			∠
KDS		Allowable bending strength for structural wood-based panels (MPa)	||						≥ 6.9	≥ 7.3	≥ 6.7	KSA (2017)
			∠						≥ 2.1	≥ 2.6	≥ 2.7
		Allowable modulus of elasticity in bending for structural wood-baed panels (MPa)	II						≥ 6,500	≥ 7,400	≥ 7,800
			∠						≥ 1,200	≥ 1,700	≥ 1,600

OSB GP-REG: General purpose non-load-bearing OSB for interior fitment for use in dry conditions.
OSB LB-REG: Load-bearing OSB for use in dry conditions.
OSB LB-MR: Load-bearing OSB for use in humid conditions.
OSB HLB-MR: Heavy duty load-bearing OSB for use in humid conditions.
Major axis.
Minor axis.
OSB: oriented strand board, ISO: International Organization for Standardization, JIS: Japanese Industrial Standards, KDS: Korean Design Standard, KSA: Korea Standards Associations.