36NiCrMo16 | DIN 1.6773 Alloy Steel

As ultra-high-strength low-alloy steel,36NiCrMo16 steel contains 1.8% Cr and 4% Ni elements as strengthening alloy elements as per EN10083 and EN10250 standard.

36NiCrMo16 steel has excellent hardenability due to its high nickel content and appropriate amount of chromium and molybdenum, and parts of general size can be hardened in air.In the quenched and tempered state, it has excellent strength, plasticity and toughness.

36NiCrMo16 steel is often used to make parts that require high strength, torsion and impact resistance, such as machine drive shafts, crankshafts, gears, worms, connecting rods, bolts, nuts, fasteners, etc.

36NiCrMo16 STEEL CHEMICAL COMPOSITION

Standard	Grade	C	Si	Mn	P	S	Cr	Ni	Mo
EN10250	36NiCrMo16/1.6773	0.32-0.39	≤0.4	0.3-0.6	≤0.03	≤0.025	1.6-2.0	3.6-4.1	0.25-0.45
EN10083	36NiCrMo16/1.6773	0.32-0.39	≤0.4	0.5-0.8	≤0.025	≤0.025	1.6-2.0	3.6-4.1	0.25-0.45

36NiCrMo16 STEEL RELATED STANDARD & EQUIVALENT GRADE

China | GB:35Cr2Ni4Mo

France | AFNOR:35NCD16

UK | BS:835M30

36NiCrMo16 STEEL FORGING

Initial Forging Temperature：1200-1220℃
Final Forging Temperature：850℃
Heating Rate:Strictly control the heating speed, which should be uniform and stable to prevent cracking caused by improper heating.
Holding Time:Ensure that the material is fully and evenly heated,and the holding time should not be too long or too short.
Forging Ratio：above 4:1
Post-Forging Treatment:36NiCrMo16 steel is highly sensitive to white spots, and should be in the furnace for dehydrogenation treatment in time after forging.

36NiCrMo16 STEEL HEAT TREATMENT

Critical Temperature for Heat Treatment of 36NiCrMo16 Steel

Ac1:670℃
Ac3:795℃

Temperature Selection for Conventional Heat treatment for 36NiCrMo16 Steel

Soft Annealing:650 – 690°C,Cooling in furnace,hardness below 269 HBW
Normalizing:850-880°C
Quenching:865-885°C,Medium:Water,Oil,Air
Tempering:550-650°C

36NiCrMo16 Steel Mechanical Property in Quenched & Tempered condition

Thickness of ruling section tR

tR≤160mm

160< tR ≤330mm

330< tR ≤660mm

Re
Min
Mpa

Rm
Min
Mpa

A min,%

KV min,J

Re
Min
Mpa

Rm
Min
Mpa

A min,%

KV min,J

Re
Min
Mpa

Rm
Min
Mpa

A min,%

KV min,J

800

1000

800

1000

800

1000

36nicrmo16 Mechanical Property with different tempering temperature

36NiCrMo16 steel Mechanical Property with Different Tempering temperature

36nicrmo16 Tempering temperature vs hardness

36NiCrMo16 steel Tempering temperature vs Hardness

Jominy Quenching Test Curve For 36NiCrMo16 Steel

Jominy Quenching Test Curve For 36NiCrMo16 Steel

Quenching at 850°C

X:Distance from quenched end,in mm

Y:Hardness,HRC

1: HH level

2: HL level

3: H level

HRC-mm	Type	1.5	3	6	7	9	11	13	15	20	25	30	35	40	45	50
MIN	+H	50	49	48	48	48	48	47	47	47	47	47	47	47	43	43
MAX	+H	57	56	56	56	56	56	55	55	55	55	55	55	55	55	54
MIN	+HH	52	51	51	51	51	51	50	50	50	50	50	50	50	50	50
MAX	+HH	57	56	56	56	56	56	55	55	55	55	55	55	55	55	55
MIN	+HL	50	49	48	48	48	48	47	47	47	47	47	47	47	47	47
MAX	+HL	55	54	53	53	53	53	52	52	52	52	52	52	52	52	52