Austenitic steel S131
2026-08-02 09:27:30 Origin： Remark：0 Click：
Type S131 displays a good feature with a coefficient of expansion close to that of aluminum. S131 mechanical properties can be enhanced by thermal treatment and further step by work hardening.
S131 is defined as a Fe - 12.5Ni - 4.5Mn - 3.5Cr - 0.6C austenitic type steel with a high thermal expansion, fastener material used for assembly of light alloy components working at high temperatures, round bar S131 stock available
Technical specifications: MSRR6616, BS EN 3890-2002
Steel type: Fe - 12.5Ni - 4.5Mn - 3.5Cr - 0.6C base alloy steel
HS tariff for Customs: 72284000 / 7228 5000
Final heat treatment: 950 / 1100℃ solution treated.
TYPICAL CHEMICAL COMPOSITIONS (mass weight - %)
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 (%): -
Others (％): tungsten, W ≤ 1.00, vanadium, V ≤ 0.25
Ferrum, Fe (%): remainder.
MECHANICAL PROPERTIES UNDER AMBIENT TEMPERATURE
Heat treatment condition: + AT 1040 ℃ solution annealed
Tensile strength, Rm ≥ MPa: 620
Yield strength, Rp0.2 ≥ MPa: 300
Elongation, A5 ≥ (%): 35.0
Impact strength, AKU ≥ J: -
Hardness HBS: -
Condition: work hardened
Tensile strength, Rm ≥ MPa: 950
Yield strength, Rp0.2 ≥ MPa: 740
Elongation, A5 ≥ (%): 30
Impact strength, AKv ≥ J: -
Hardness HBS: -
TYPICAL APPLICATIONS
S131 displays a good feature with a coefficient of expansion close to that of aluminum. Its mechanical properties can be enhanced by thermal treatment and further step by work hardening.
Fasteners used for assembly of light alloy components working at high temperatures.
Distribution hollow tubes for valveless engines with pistons and cylinders.
Precombustion chambers fitted to light alloy piston heads for diesel engines.
TECHNICAL SALES ASSISTANCE AND SERVICE
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
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.
If you meet further on any technical enquiry or help, pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
Jiangyou Longhai Special Steel Co.,Ltd
ISO 9001-2015 Certified
Raw material stock available
Custom 450 / GD450 / XM-25 (S45000), 403 ESR, AISI 616 / 422 ESR, B50A365 / 403Cb+
17-4PH / 630, M-152 / 1.4938 / S151D, FV520B / S143 / 1.4594. X22CrMoV12-1
13Х11Н2B2MФ / AE961W, 11Х11Н2B2MФ / 16Х11Н2B2MФ
AISI 615 / S41800, 15-5PH / XM-12 (S15500), A-286 AISI 660 / S66286
10705BU, 10705MBU, 10705AJ, 10705BA/BB/BC, S132, S131, S111, S159, S154
Hot search：
Previous page：Stainless steel FV520
Last page：13Ni Expansion steel S131
Total list
Monthly rank
- 10918CrNiMo7
- 28S154
- 25AISI / SAE 3145
- 2330NiCrMo12
- 23AISI/SAE 6140
- 2150CrVA
- 17X46Cr13
- 1634CrNiMo4
- 16EN 355
- 16XC38