Martensitic steel 1.4418 QT900
2026-09-13 16:12:00 Origin： Remark：0 Click：
BS EN 10088-3 Martensitic Steel 1.4418 hardened round bar, stock available 1.4418 QT900 turbine balde steel flat bar, ESR, Hot forged, rolled
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - CNAS
RAW MATERIAL SPECIFICATION - 1.4418 + QT900
Material type: stainless steel round bar, flat bars and forgings.
Stock in hand: round bar diameter 16 mm, 22 mm, 80 mm, 115 mm.
Technical specification: BS EN 10083-3 : 2005
Typical chemical compositions (mass weight - %)
Carbon, C (％): ≤ 0.06
Silicon, Si (％): ≤ 0.70
Manganese, Mn (％): ≤ 1.50
Phosphorus, P (％)≤: 0.040
Sulfur, S (％)≤: 0.030
Chromium, Cr (％): 15.0 ~ 17.0
Nickel, Ni (％): 4.00 ~ 6.00
Molybdenum, Mo (％): 0.80 ~ 1.50
Nitrogen, N (％): ≥ 0.020
Silicon, Si (％): ≤ 0.70
Manganese, Mn (％): ≤ 1.50
Phosphorus, P (％)≤: 0.040
Sulfur, S (％)≤: 0.030
Chromium, Cr (％): 15.0 ~ 17.0
Nickel, Ni (％): 4.00 ~ 6.00
Molybdenum, Mo (％): 0.80 ~ 1.50
Nitrogen, N (％): ≥ 0.020
MECHANICAL PROPERTY BASED ON THE DIFFERENT HEAT TREATMENT CYCLES
Thickness/≤mm: -
Condition of thermal treatment: annealed
Hardness HBS: 320
Yield strength Rp0.2 ≥ MPa: -
Tensile strength, Rm / MPa: 1100
Elongation, A5 (longitudinal) ≥: -
Elongation, A5 (transversal) ≥: -
Impact absorbing power Akv ≥ J | longitudinal: —
Impact absorbing power Akv ≥ J | transversal : —
Condition of thermal treatment: annealed
Hardness HBS: 320
Yield strength Rp0.2 ≥ MPa: -
Tensile strength, Rm / MPa: 1100
Elongation, A5 (longitudinal) ≥: -
Elongation, A5 (transversal) ≥: -
Impact absorbing power Akv ≥ J | longitudinal: —
Impact absorbing power Akv ≥ J | transversal : —
Thickness/≤mm: 60
Condition of thermal treatment: QT760
Hardness HBS: -
Yield strength σ0.2 ≥ MPa: 550
Tensile strength σb / MPa: 760~960
Elongation δ (longitudinal) ≥ (％): 16.0
Elongation δ (transversal) ≥ (％): -
Impact absorbing power Akv ≥ J | longitudinal: 90
Condition of thermal treatment: QT760
Hardness HBS: -
Yield strength σ0.2 ≥ MPa: 550
Tensile strength σb / MPa: 760~960
Elongation δ (longitudinal) ≥ (％): 16.0
Elongation δ (transversal) ≥ (％): -
Impact absorbing power Akv ≥ J | longitudinal: 90
Impact absorbing power Akv ≥ J | transversal: -
Thickness/≤mm: 60 < d ≤ 250
Condition of thermal treatment: QT650
Hardness HBS: -
Yield strength σ0.2 ≥ MPa: 550
Tensile strength σb / MPa: 760~960
Elongation δ (longitudinal) ≥ (％): -
Elongation δ (transversal) ≥ (％): 14
Impact absorbing power Akv ≥ J | longitudinal: -
Condition of thermal treatment: QT650
Hardness HBS: -
Yield strength σ0.2 ≥ MPa: 550
Tensile strength σb / MPa: 760~960
Elongation δ (longitudinal) ≥ (％): -
Elongation δ (transversal) ≥ (％): 14
Impact absorbing power Akv ≥ J | longitudinal: -
Impact absorbing power Akv ≥ J | transversal: 70
Thickness/≤mm: ≤160
Condition of thermal treatment: QT900
Hardness HBS: -
Yield strength σ0.2 ≥ MPa: 700
Tensile strength σb / MPa: 900~1100
Elongation δ (longitudinal) ≥ (％): 16
Elongation δ (transversal) ≥(％): -
Impact absorbing power Akv ≥ J longitudinal: 80
Condition of thermal treatment: QT900
Hardness HBS: -
Yield strength σ0.2 ≥ MPa: 700
Tensile strength σb / MPa: 900~1100
Elongation δ (longitudinal) ≥ (％): 16
Elongation δ (transversal) ≥(％): -
Impact absorbing power Akv ≥ J longitudinal: 80
Impact absorbing power Akv ≥ J transversal: -
Thickness/≤mm: 160<d≤250
Condition of thermal treatment: QT900
Hardness HBS: -
Yield strength σ0.2 ≥ MPa: 700
Tensile strength σb / MPa: 900~1100
Elongation δ (longitudinal) ≥ (％): 14
Elongation δ (transversal) ≥ (％): -
Impact absorbing power Akv ≥ J | longitudinal: 60
Condition of thermal treatment: QT900
Hardness HBS: -
Yield strength σ0.2 ≥ MPa: 700
Tensile strength σb / MPa: 900~1100
Elongation δ (longitudinal) ≥ (％): 14
Elongation δ (transversal) ≥ (％): -
Impact absorbing power Akv ≥ J | longitudinal: 60
Impact absorbing power Akv ≥ J | transversal: -
SHAPES & DIMENSIONS
Round bar, rod, disc (diameter): 6.0 to 800 mm
Square bar, flat bar: 10 to 600 mm
Length: Fixed length or random length or based on the customer's special requirement.
Round bar, rod, disc (diameter): 6.0 to 800 mm
Square bar, flat bar: 10 to 600 mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled / forged: T6 ~ 400 X W20 ~ 1000 x L1000 ~ 12000 mm
Sheet steel via cold rolled: T0.5 - 6 X W60 ~ 1000 x L1000 ~ 2000 mm
Forging piece: stepped shafts, other different shapes based on OEM.
Sheet steel via cold rolled: T0.5 - 6 X W60 ~ 1000 x L1000 ~ 2000 mm
Forging piece: stepped shafts, other different shapes based on OEM.
PRODUCT DESCRIPTION
The alloy is usually produced by AOD / VOD / 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 black/bright in the annealed condition.
Final heat treatment - Quenched and Tempered.
The alloy is usually produced by AOD / VOD / 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 black/bright in the annealed condition.
Final heat treatment - Quenched and Tempered.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
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