WN numbering

Pig iron
	0.0000	0.0999	General-purpose grades for steelmaking
	0.1000	0.1999	General-purpose grades for casting
	0.2000	0.2999	Alloy pig iron
Master alloys (deoxydants and alloying elements, including ferroalloys)
	0.3000	0.3099	Specular pig iron
	0.3100	0.3199	FeMn, Mn, FeSiMn
	0.3200	0.3299	Reserved
	0.3300	0.3399	FeSi, Si, FeSiZr
	0.3400	0.3599	Reserved
	0.3600	0.3699	FeAlSi,FeAlSiMn, NiSiMg, FeNiMg
	0.3700	0.3799	FeSiMg, NiMg,CaSiMg, NiSiMg, FeNiMg
	0.3800	0.3899	SiC, CaC2
	0.3900	0.3999	Reserved
	0.4000	0.4099	FeCr,FeCrSi,Cr
	0.4100	0.4199	Reserved
	0.4200	0.4299	FeMo
	0.4300	0.4399	FeW
	0.4400	0.4499	FeNi
	0.4500	0.4599	FeTi
	0.4600	0.4699	Reserved
	0.4700	0.4799	FeNb, FeV, FeTa
	0.4800	0.4899	FeB, FeP
	0.4900	0.4999	Reserved
Cast iron types
	0.6000	0.6999	Grey cast iron
	0.6000	0.6199	unalloyed
	0.6200	0.6299	alloyed Cr
	0.6300	0.6399	alloyed Cu
	0.6400	0.6499	alloyed Mn
	0.6500	0.6599	alloyed Mo
	0.6600	0.6699	alloyed Ni
	0.6700	0.6799	alloyed Si
	0.6800	0.6899	others
	0.6900	0.6999	Reserved
	0.7000	0.7999	Ductile cast iron
	0.7000	0.7199	unalloyed
	0.7200	0.7299	alloyed Cr
	0.7300	0.7399	alloyed Cu
	0.7400	0.7499	alloyed Mn
	0.7500	0.7599	alloyed Mo
	0.7600	0.7699	alloyed Ni
	0.7700	0.7799	alloyed Si
	0.7800	0.7899	others
	0.7900	0.7999	Reserved
	0.8000	0.8999	Malleable cast iron
	0.8000	0.8199	unalloyed
	0.8200	0.8299	alloyed
	0.8300	0.8999	Reserved
	0.9000	0.9999	Special grades of cast iron
	0.9000	0.9199	unalloyed
	0.9200	0.9299	alloyed Cr
	0.9300	0.9399	alloyed Cu
	0.9400	0.9499	alloyed Mn
	0.9500	0.9599	alloyed Mo
	0.9600	0.9699	alloyed Ni
	0.9700	0.9799	alloyed Si
	0.9800	0.9899	others
	0.9900	0.9999	Reserved
Reserved
	0.5000	0.5999	Reserved
Non-alloy steels
	1.0000	1.0099	Base steels
	1.9000	1.9099	Base steels
			Quality steels
	1.0100	1.0199	General structural steels, with Rm < 500 MPa
	1.9100	1.9199	General structural steels, with Rm < 500 MPa
	1.0200	1.0299	Other structural steels not intended for heat treatment, with Rm < 500 MPa
	1.9200	1.9299	Other structural steels not intended for heat treatment, with Rm < 500 MPa
	1.0300	1.0399	Steels with average C < 0,12% or Rm < 400 MPa
	1.9300	1.9399	Steels with average C < 0,12% or Rm < 400 MPa
	1.0400	1.0499	Steels with average C >= 0,12% < 0,25% or Rm >= 500 MPa
	1.9400	1.9499	Steels with average C >= 0,12% < 0,25% or Rm >= 500 MPa
	1.0500	1.0599	Steels with average C >= 0,25% < 0,55% or Rm >= 500 < 700 MPa
	1.9500	1.9599	Steels with average C >= 0,25% < 0,55% or Rm >= 500 < 700 MPa
	1.0600	1.0699	Steels with average C >= 0,55% or Rm >= 700 MPa
	1.9600	1.9699	Steels with average C >= 0,55% or Rm >= 700 MPa
	1.0700	1.0799	Steels with higher P or S content
	1.9700	1.9799	Steels with higher P or S content
			Special steels
	1.1000	1.1099	Steels with special physical properties
	1.1100	1.1199	Structural pressure vessel and engeneering steels with C < 0,50%
	1.1200	1.1299	Structural pressure vessel and engeneering steels with C >= 0,50%
	1.1300	1.1399	Structural pressure vessel and engeneering steels with special requirements
	1.1400	1.1499	Special steels
	1.1500	1.1899	Tool steels
	1.1900	1.1999	Special steels
Alloy steels
.			Quality steels
	1.0800	1.0899	Steels with special physical properties
	1.9800	1.9899	Steels with special physical properties
	1.0900	1.0999	Steels for other applications
	1.9900	1.9999	Steels for other applications
	1.2000	1.2999	Special steels - Tool steels
	1.2000	1.2099	Cr
	1.2100	1.2199	Cr-Si, Cr-Mn, Cr-Mn-Si
	1.2200	1.2299	Cr-V, Cr-V-Si, Cr-V-Mn,Cr-V-Mn-Si
	1.2300	1.2399	Cr-Mo, Cr-Mo-V, Mo-V
	1.2400	1.2499	W, Cr-W
	1.2500	1.2599	W-V, Cr-W-V
	1.2600	1.2699	W, excluding groups 24,25 and 27
	1.2700	1.2799	With Ni
	1.2800	1.2899	Others
	1.2900	1.2999	Special steels - Tool steels
	1.3000	1.3999	Special steels - Miscellaneous steels
	1.3000	1.3099	Special steels - Miscellaneous steels
	1.3100	1.3199	Special steels - Miscellaneous steels
	1.3200	1.3299	High speed steel with Co
	1.3300	1.3399	High speed steel without Co
	1.3400	1.3499	Special steels - Miscellaneous steels
	1.3500	1.3599	Bearing steels
	1.3600	1.3699	Materials with special magnetic properties, without Co
	1.3700	1.3799	Materials with special magnetic properties, with Co
	1.3800	1.3899	Materials with special physical properties, without Ni
	1.3900	1.3999	Materials with special physical properties, with Ni
	1.4000	1.4999	Special steels - Stainless and heat resisting steels
	1.4000	1.4099	Stainless steel with < 2,5% Ni without Mo, Nb and Ti
	1.4100	1.4199	Stainless steel with < 2,5% Ni and Mo, but without Nb and Ti
	1.4200	1.4299	Special steels - Stainless and heat resisting steels
	1.4300	1.4399	Stainless steel with => 2,5% Ni and Mo, but without Mo, Nb and Ti
	1.4400	1.4499	Stainless steel with <= 2,5% Ni and Mo, but without Nb and Ti
	1.4500	1.4599	Stainless steel with special additions
	1.4600	1.4699	Chemically resistant and high-temperature Ni alloys
	1.4700	1.4799	Heat resistant steels with < 2,5% Ni
	1.4800	1.4899	Heat resistant steels with >= 2,5% Ni
	1.4900	1.4999	Materials with elevated temperature properties
	1.5000	1.8999	Special steels - Structural, pressure vessel and engineering steels
	1.5000	1.5099	Mn, Si, Cu
	1.5100	1.5199	Mn-Si, Mn-Cr
	1.5200	1.5299	Mn-Cu, Mn-V, Si-V, Mn-Si-V
	1.5300	1.5399	Mn-Ti, Si-Ti
	1.5400	1.5499	Mo, Nb, Ti, V, W
	1.5500	1.5599	B, Mn-B < 1,65% Mn
	1.5600	1.5699	Ni
	1.5700	1.5799	Cr-Ni, with < 1,0% Cr
	1.5800	1.5899	Cr-Ni, with >= 1,0 < 1,5% Cr
	1.5900	1.5999	Cr-Ni, with >= 1,5 < 2,0% Cr
	1.6000	1.6099	Cr-Ni, with >= 2,0 < 3% Cr
	1.6100	1.6199	Special steels - Structural, pressure vessel and engineering steels
	1.6200	1.6299	Ni-Sn, Ni-Mn, Ni-Cu
	1.6300	1.6399	Ni-Mo, Ni-Mo-Mn, Ni-Mo-Cu, Ni-Mo-V, Ni-Mn-V
	1.6400	1.6499	Special steels - Structural, pressure vessel and engineering steels
	1.6500	1.6599	Cr-Ni-Mo, with < 0,4% Mo + < 2% Cr
	1.6600	1.6699	Cr-Ni-Mo, with < 0,4% Mo + >= 2,0 <3,5% Ni
	1.6700	1.6799	Cr-Ni-Mo, with < 0,4% Mo + >= 3,5 < 5,0% Ni oder >= 0,4% Mo
	1.6800	1.6899	Cr-Ni-V, Cr-Ni-W, Cr-Ni-V-W
	1.6900	1.6999	Cr-Ni except groups 57 bis 68
	1.7000	1.7099	Cr, Cr-B
	1.7100	1.7199	Cr-Si, Cr-Mn, Cr-Mn-B, Cr-Si-Mn
	1.7200	1.7299	Cr-Mo, with < 0,35% Mo, Cr-Mo-B
	1.7300	1.7399	Cr-Mo with >= 0,35% Mo
	1.7400	1.7499	Special steels - Structural, pressure vessel and engineering steels
1.7500	1.7599	Cr-V, with < 2,0% Cr
1.7600	1.7699	Cr-V, with > 2,0% Cr
1.7700	1.7799	Cr-Mo-V
1.7800	1.7899	Special steels - Structural, pressure vessel and engineering steels
1.7900	1.7999	Cr-Mn-Mo, Cr-Mn-Mo-V
1.8000	1.8099	Cr-Si-Mo, Cr-Si-Mn-Mo, Cr-Si-Mo-V, Cr-Si-Mn-V
1.8100	1.8199	Cr-Si-V, Cr-Mn-V, Cr-Si-Mn-V
1.8200	1.8299	Cr-Mo-W, Cr-Mo-W-V
1.8300	1.8399	Special steels - Structural, pressure vessel and engineering steels
1.8400	1.8499	Cr-Si-Ti, Cr-Mn-Ti, Cr-Si-Mn-Ti
1.8500	1.8599	Nitriding steels
1.8600	1.8699	Special steels - Structural, pressure vessel and engineering steels
1.8700	1.8799	Steels not for heat treatment by user
1.8800	1.8999	Steels not for heat treatment by user (High strength weldable steels)