Non-Corrosion Resisting Steel 4 S28

Technical Data Sheet

Chemical Composition Limits
Weight%	C	Si	Mn	P+S max	Cr	Mo	Ni
4S28	0.26-0.34	0.10-0.35	0.45-0.70	P 0.025 S 0.020	1.10-1.40	0.20-0.35	3.90-4.30
Chemically similar British Specifications BS.970 Pt2
Weight%	C	Si	Mn	P+S max	Cr	Mo	Ni
835M30	0.26-0.34	0.10-0.35	0.45-0.75	P 0.025-0.050 S 0.025-0.040	1.10-1.40	0.20-0.35	3.90-4.30
EN30B	0.26-0.34	0.10-0.35	0.40-0.60	-	-	0.20-0.40	3.90-4.30
Other Chemically similar Specifications
Weight%	C	Si	Mn	P+S max	Cr	Mo	Ni
AFNOR 30NCD16	0.25-0.35	0.10-0.40	0.20-0.55	P 0.030 S 0.025	1.20-1.50	0.40-0.60	3.70-4.30
AFNOR 35NCD16	0.03-0.37	0.10-0.40	0.30-0.60	P 0.030 S 0.025	1.60-2.00	0.30-0.50	3.70-4.20
WS 1.2766 NiCrMo16	0.32-0.38	0.15-0.30	0.40-0.60	0.035 max	1.20-1.50	0.20-0.40	3.80-4.30

Typical Mechanical Properties

Grade	Treatment	Tensile Strength Rm (tonf/in²)	Proof Stress Rp 0.2, (tonf/in²)	Elongation in 5.65 √Cross Sectional Area %	Hardness HB	Ruling Section
S28	Solution Annealed	-	-	-	285 max	2 1/2"
S28	Hardened and Tempered	100	73	8	444	2 1/2"

Availability
Alloy S28 is available in Bar. For all stock availability contact Sales.

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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.