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Data Sheet:

Non-Corrosion Resisting Steel 4 S28

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 0.025 P / 0.020 S 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 0.025 / 0.050 P 0.025 / 0.040 S 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 0.030 P / 0.025 S 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 0.030 P / 0.025 S 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

 

AVAILABILITY

S28 is available in Bar.

 

TYPICAL MECHANICAL PROPERTIES

S28
Treatment Tensile Strength Rm, tonf/in2 Proof Stress Rp 0.2, tonf/in2

Elongation in 5.65√Cross 

Sectional Area (%)

Hardness HB
Solution Annealed - - - 285 max
Hardened and Tempered 100 73 8   444

 

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.

 

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