X40MnCr18-4
2026-02-20 16:14:00   Origin：   Remark：0 Click：

OFFICIAL TEST CERTIFICATE: issued by TUV - SGS -  BV

TECHNICAL DATA SHEET - X40MnCr18-4
Material category: 18Mn - 4Cr non-magnetic steel
Technical specifications - DIN SEW 390 (1991)
Stock available - round bar Dia. 20 ~ 210mm, ESR ingot

Typical chemical compositions (mass fraction %)
Carbon, C (％): 0.30 ~ 0.50
Silicon, Si (％): ≤ 0.80
Manganese, Mn (％): 17.0 ~ 19.0
Phosphorus, P (％): ≤ 0.060
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 3.00 ~ 5.00
Nickel, Ni (％): -
Molybdenim, Mo (％): -
Nitrogen, N (％): 0.10 max.

HOT WORKING, HEAT TREATMENT AND MECHANICAL PROPERTIES
Hot working temperature: 1050 ~ 850℃
Quenching or solution treatment temperature: 1000 ~ 1050℃
Tensile strength, Rm ≥ MPa: 740 ~ 930
Yield strength, Rp0.2 ≥ MPa: 295
Elongation, A5 ≥ (％): 45.0
Impact strength, Akv ≥ J: 124

PROFILES & DIMENSIONS
Round bar & disc (diameter): 6.0 ~ 800 mm
Square bar / flat bar: 10 ~ 600 mm
Length: random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 ~ 400 X W20 ~ 1000 X L1000 ~ 5000 mm
Forging piece: stepped shafts, other different shapes based on OEM.

TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.