18.0Mn - 4.0Cr Steel 1.3818
2026-08-21 16:03:00 Origin： Remark：0 Click：
DIN SEW 390 austenitic steel 1.3818 Mn18.0% - Cr4.0% base steel 1.3818 peeled round bar, flat bar, X55MnCrN18-4 ESR-ingot available stock, cold worked
TECHNICAL DATA SHEET - X55MnCrN18-4 & 1.3818
HS Code for Customs: 72221100, 72221900, 72223000
Available in stock: round bar 50 ~ 200 mm, ESR ingot
Technical specification: DIN SEW 390 (1991)
Typical chemical compositions (mass weight - %)
Carbon, C (％): 0.50 ~ 0.60
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): 17.5 ~ 20.0
Phosphorus, P (％) ≤: 0.060
Sulfur, S (％) ≤: 0.030
Chromium, Cr (％): 4.00 ~ 5.00
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): 17.5 ~ 20.0
Phosphorus, P (％) ≤: 0.060
Sulfur, S (％) ≤: 0.030
Chromium, Cr (％): 4.00 ~ 5.00
Nickel, Ni (％): ≤ 1.00
Molybdenum, Mo (％): -
Nitrogen, N (％): 0.05 ~ 0.12
Molybdenum, Mo (％): -
Nitrogen, N (％): 0.05 ~ 0.12
HEAT TREATMENT AND MECHANICAL PROPERTIES
Hot working temperature: 1150 ~ 950
Quenching or solution treatment temperature: 1020 - 1120
Tensile strength, Rm: 750 ~ 1000 MPa
Yield strength, Rp0.2: 380 MPa Min.
Elongation, A5: 40.0% Min.
Impact strength, Akv ≥ J: 100 (transversal value)
Yield strength, Rp0.2: 380 MPa Min.
Elongation, A5: 40.0% Min.
Impact strength, Akv ≥ J: 100 (transversal value)
TYPICAL APPLICATIONS
High-voltage electrical apparatus, bolts and nuts.
Transformer tank, Generator ring & parts.
Preparation equipments. Electronics.
PROFILE & DIMENSIONS
Round bar, disc (diameter): 5.5 to 900 mm
Square bar, flat bar: 10 to 600 mm
Heavy, middle plate: T6 ~ 300 X W15 ~ 500 X L mm
Round bar, disc (diameter): 5.5 to 900 mm
Square bar, flat bar: 10 to 600 mm
Heavy, middle plate: T6 ~ 300 X W15 ~ 500 X L mm
Forging piece: stepped shafts, and other different shapes based on OEM.
PRODUCT DESCRIPTION
1.3818 is usually produced by AOD, BEF followed by electroslag refining (ESR) / VAR if necessary for special purpose. And bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Final heat treatment: solution treatment + aged, cold worked.
1.3818 is usually produced by AOD, BEF followed by electroslag refining (ESR) / VAR if necessary for special purpose. And bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Final heat treatment: solution treatment + aged, cold worked.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. E-mail: sales@ccsteels.com.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. E-mail: sales@ccsteels.com.
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