X60NiMnCr13-5-3 / S131 expansion steel
2026-06-04 15:10:00   Origin：   Remark：0 Click：

TECHNICAL DATA SHEET - S131 & X60NiMnCr13-5-3

Material category: aerospace "S" Series alloy steel
HS tariff code: 72284000 / 7228 5000
Material specifications: BS 2S131-1977
Typical chemical compositions (mass fraction - %)
Carbon, C (％): 0.55 ~ 0.70
Silicon, Si (％): 0.20 ~ 0.50
Manganese, Mn (％): 3.50 ~ 5.50
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 3.00 ～ 4.00
Nickel, Ni (％): 11.0 ～ 14.0
Molybdenum, Mo (％): ≤ 0.50
Niobium, Nb/Ti (%): - 
Other (％): W ≤ 1.00, V ≤ 0.25

MECHANICAL PROPERTIES UNDER ROOM TEMP.
Heat treatment condition: + AT 1040 ℃ solution annealed
Tensile strength σb ≥ MPa: 620
Yield strength σs ≥ MPa: 300
Elongation δ5 ≥ (%): 35.0
Impact strength, AKU ≥ J:  -
Hardness HBS: -

PRODUCT DESCRIPTION
S131 is usually produced by AOD / EAF followed by electroslag refining (ESR) / VAR if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition.
Final heat treatment - solution treatment.

TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email:sales@ccsteels.com.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.