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16NiCr11

Steel that originated in the automobile industry, no longer present in the international standards. Thanks to its high nickel content, it is used for pieces that are particularly subject to fatigue and vibrations.

References and Comparable Standards

Standard Reference: UNI 5331-64
EUROPE ITALY GERMANY FRANCE UK USA
EN 10084: 2008
EN 10277-4: 2008
(UNI 7846-78) (DIN 17210-84) (NFA35-551-86) (BS970 pt.1--96) ASTM A 29
Grade   Werkstoff      
(15NiCr13) (1.5752) 16NiCr11   - - 14NC11  -

Chemical Composition (Cast Analysis) (%)

C Si Mn P/max S Cr  Mo/max Ni Al
0,12÷0,18 0,15÷0,40 0,30÷0,60 0,025 0,020÷0,035  0,60÷0,90 0,10 2,50÷3,00 0,020÷0,050

Mechanical Properties - As Rolled Condition

Hardness (HB) - Treated to improve sherability (+S) Hardness (HB) - Annealed to maximum hardness requirements (+A) Hardness (HB) - Treated to ferrite-pearlite structure and hardness range (+FP)
≤ 280 ≤ 235 ≥ 150 ≤ 210

 

Mechanical Properties – Bright Steel*

Size
(mm)
+A**+ Turned (+A +SH) +A**+ Cold drawn (+A+C) FP***+ Turned (+FP +SH) FP***+ Cold drawn (+FP +C)
Hardness HB max Hardness HB max Hardness HB Hardness HB
5≤d≤10 - - - -
10<d≤16 - 255 - 150÷220
16<d≤40 235 255 150÷210 150÷220
40<d≤63 235 255 150÷210 145÷215
63<d≤100 235 255 150÷210 145÷215

*for reference only
 **+A = annealed to maximum hardness requirement
***+FP = treated to ferrite-perlite structure and hardness range
    For size <5 mm the mechanical properties may be agreed at the time of enquiry and order

Working Temperatures Recommended

Operation °C
Hot forgings deformation 900÷1150
Carburizing temperature  880÷980
Core quenching temperature   840÷880
Case quenching temperature 780÷820
Tempering 150÷200

Hardness Limits (Jominy Test)

Limits of range Hardness HRC at a distance from quenched end of test pieces (mm)
1,5 3 5 7 9 11  13 15 20       25  30  35  40
+H Max 48 46,5 44,5 43 41,5 40 39 37,5 35 32,5 31 29,5 28,5
Min  39 36,5 34 32 30 28,5 27 26 23,5 21,5 19,5 18 17,5
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