VALVE STEELS

ACCIAIERIE VALBRUNA S.P.A. can supply steels and special alloys for engine valves in rough ground, ground, or ground and polished bars depending on the production process of the customers. Rough ground or ground bars are offered for engine valves obtained by extrusion, while the ground and polished bars are propsed for upsetting and forging processes.

	Approximate Equivalance Grades Valbruna EN / DIN NF BS SAE JIS Martensitic steels VAL5 / BSI         SUH11 VAL5 1.4718 Z45CS9 401S45 HNV3 SUH1 VAL5M 1.4731 Z40CSD10     SUH3 AVS   Z80CNS20-02 443S65 HNV6 SUH4 ACMV 1.4748 Z85CDV18-02       Austenitic steels ACNW   Z35CNWS14-14 331S40     AVW 1.4873 Z45CNW18-09     SUH31 APFR2   Z20CN21-12AZ 381S34 EV4 SUH37 NTR20       EV16   212MN 1.4875 Z53CMN20-08AZ   EV12   214MN 1.4871 Z53CMN21-09AZ 349S52 EV8 SUH35 214MNC   Z53CMNNB21-09-02AZ 352S52     214MNCW 1.4882 Z50CMNB21-09-02AZ       S5220 1.4785 Z60CMDVNB21-10AZ       Nickel alloy GL2 2.4952 NC20TA   HEV5   Titanium alloy Ti Gr.5       XEV-J
	Chemical Composition Reference Table Valbruna C% Mn% Si% Cr% Ni% Mo% N% Nb% W% V% Low alloy steels VD45 0.38     1 1 0.20         Martensitic steels VAL5/BSI 0.50   1.50 8.50             VAL5 0.45   3 9             VAL5M 0.40   2.50 10   1         AVS 0.80   2 20 1.50           ACMV 0.85     17   2.20       0.50 Austenitic steels ACNW 0.45   1 14 14       2.50   AVW 0.45   2.50 18 9   0.20   1   APFR2 0.20   1 21 12   0.30       NTR20 0.32 2.50   23 8   0.20       21MN 0.70 6   21 1.50   0.35       212MN 0.55 8   21 2.50   0.45       214MN 0.52 9   21 4   0.45       214MNC 0.52 9   21 4   0.45 2.50     214MNCW 0.52 9   21 4   0.45 2 1   S5220 0.60 10   21   1 0.50 1   1 Nickel alloy   C% Fe% Si% Ni% Cu% Co% Al% Ti% GL2 0.07 1.50 20 Remainder 0.10 2 1.30 2.30 Titanium alloy   C% N% H% Fe% O% Al% V% Ti% Ti Gr.5 <0.10 <0.50 <0.01 <0.40 <0.20 6 4 Remainder

 

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