DTD S129 Aircraft Steel

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Quality - BS EN ISO 9001:2000

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Data Sheet:

Corrosion Resisting Alloy S129

Chemical Composition Limits
Weight %	C	Si	Mn	P+S max	Cr	Mo	Ni	Others
S129	0.12 max	0.20 / 1.00	0.50 / 2.00	0.035P 0.025S	17.00 / 19.00	-	8.00 / 11.00	Ti 5 x C min
2S129	0.08 max	0.20 / 1.00	0.50 / 2.00	0.035P 0.025S	17.00/19.00	1.0 max	8.00 / 11.00	Ti 5 x C/0.80
Chemically similar British Specifications BS.970 Pt4.
Weight %	C	Si	Mn	P+S max	Cr	Mo	Ni	Others
321S20 321S12 (EN58 B/C)	0.12 max	0.20 / 1.00	0.50 / 2.00	0.045 P 0.030 S	17.00 / 19.00	-	8.00 / 11.00	5 x C / 0.90 (Ti)
Other Chemically similar Specifications
Weight %	C	Si	Mn	P+S max	Cr	Mo	Ni	Others
AFNOR Z10 CNT 18-11 Z6 CNT 18-11	0.12 max	1.00 max	2.00 max	0.040 P 0.030 S	17.00 / 19.00	-	10.00 / 12.00	Ti 5 x C / 0.80
AISI 321/ SAE 30321	0.80 max	1.00 max	2.00 max	0.045 P 0.030 S	17.00 / 19.00	-	9.00 / 12.00	Ti 5 x C / min
AMS 5645	0.80 max	1.00 max	2.00 max	0.040 P 0.030 S	17.00 / 19.00	0.75 max	8.00 / 12.00	Ti 6 x C / 0.70 Cu 0.050 max
MIL-S-862B 321	0.80 max	1.00 max	2.00 max	0.045 P 0.030 S	17.00 / 19.00	-	9.00 / 12.00	Ti 5 x C
MIL-S-27419 321	0.80 max	1.00 max	2.00 max	0.025	17.00 / 20.00	-	9.00 / 13.00	Ti 0.75 max Cu 0.70 max
WS 1.4541 X10CrNiTi18 9	1.00 max	1.00 max	2.00 max	0.045 P 0.030 S	17.00 / 19.00	-	9.00 / 11.50	Ti 5 x C min

SPECIFICATIONS

S129 is available in Bar.

MECHANICAL PROPERTIES

S129

Treatment

Tensile Strength Rm, N/MM²

Proof Stress Rp 0.2, N/MM²

Elongation in 5.65√Cross

Sectional Area (%)

Hardness HB

max

Solution Treated

540

210

Black183 Bright255

Disclaimer

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

E-mail sales@aircraftmaterialsuk.com

Unit 7, Wycombe Industrial Mall, West End Street, High Wycombe, Bucks, HP11 2QY, UK

Tel. 44 (0) 1494 857823

Tel. 44 (0) 8707 655 225/6 Fax. 44 (0) 8707 652 267/8