Non-Corrosion Resisting Steel 30NCD16

Technical Data Sheet


Chemical Composition Limits
4% Ni-Cr-Mo, Alloy Steel, Air Hardening 100 ton, Ruling Section 2.5"
Weight% C Si Mn P+S max Cr Mo Ni Others
4S28 0.38 - 0.45 0.60-0.90 0.010 1.45-1.80 0.70-0.95 1.65-2 0.30-0.50 0.05-0.10
Chemically similar British Specifications BS.970 Pt2.
Weight% C Si Mn P+S max Cr Mo Ni Others
835M30 0.26-0.34 0.10-0.35 0.45-0.75 P 0.025-0.50
S 0.025-0.040
1.10-1.40 0.20-0.35 3.90-4.30 -
EN30B 0.26-0.34 0.10-0.35 0.40-0.60 - - 0.20-0.40 3.90-4.30 -
Other Chemically similar Specifications
Weight% C Si Mn P+S max Cr Mo Ni Others
0.25-0.35 0.10-0.40 0.20-0.55 P 0.030
S 0.025
1.20-1.50 0.40-0.60 3.70-4.30 -
0.030-0.37 0.10-0.40 0.30-0.60 P 0.030
S 0.025
1.60-2.00 0.30-0.50 3.70-4.20 -
WS 1.2766
0.32-0.38 0.15-0.30 0.40-0.60 0.035 max 1.20-1.50 0.20-0.40 3.80-4.30 -

Alloy 30NCD16 is nickel-chrome-moly steel with excellent hardenability and good resistance to fatigue and repeated impact. It is used in a wide range of safety-critical parts, gears and crank shafts in both the aerospace and motorsports industries.

Typical Mechanical Properties


Alloy Condition Tensile Strength N/mm² Yield Strength N/mm² Elongation % Impact Strength (KCU) Hardness HB
Alloy 30NCD16 Annealed - - - - 235
Alloy 30NCD16 Quenched & Tempered (200°C) 1750 1250 12 70 J/cm² -
Alloy 30NCD16 Quenched & Tempered (625°C) 1000 900 19 140 J/cm² -

For all stock availability contact Sales.

BS 4S28
835M30 / EN30B
WS 1.2766
AFNOR 35NCD16 (819B)
At Aircraft Materials we specialise in the rapid turn-around of orders, with most stock items ready for shipping out the same day to anywhere in the world. For time-critical orders, such as AOGs use our AOG service desk (, the team are dedicated to processing and dispatching orders on the same day, even for cutting orders on bar and sheet products.

Our expertise in global logistics enables us to source material from anywhere in the world in a matter of days and provide fast shipping solutions to all our customers, whichever country they are in. We use a range of transport partners to ship overnight within the UK and Europe, and offer a full range of logistics solutions from priority express services to more cost-effective economy shipments all around the globe. To find out more about our services click here.

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.