Product Description: 36CrNiMo4 | 9840 Alloy Steel Rod
📏 Dimensions: Hot Rolled Round: dia.10-260 mm.
⚙️ Delivery Condition: EAF+LF+VD, Hot Rolled or Forged or Cold Drawn, Unmachined or Machined surface (Peeled, Turned, Grinded), Annealed, Hardness ≤ 269HB, UT 100% Passed.
Steel Grade Equivalence
| 9840 |
36CrNiMo4 1.6511 |
---- |
40CrNiMoA |
Chemical Composition (%)
| 36CrNiMo4 |
0.32-0.40 |
≤ 0.40 |
0.50-0.80 |
≤ 0.035 |
0.90-1.20 |
0.15-0.30 |
0.90-1.20 |
| 9840 |
0.38-0.43 |
0.20-0.35 |
0.70-0.90 |
≤ 0.040 |
0.70-0.90 |
0.20-0.30 |
0.85-0.15 |
Frequently Asked Questions (FAQ)
Q1: What are the key characteristics of 36CrNiMo4 steel?
A: It is a low-alloy steel containing chromium, molybdenum, and nickel, offering excellent hardenability, high strength, and superior toughness.
Q2: What delivery conditions are available for 9840 alloy steel rods?
A: We provide EAF+LF+VD refined steel in hot rolled, forged, or cold drawn conditions with unmachined or machined (peeled/turned) surfaces.
Q3: Can this material be welded easily?
A: Pre-heat and post-weld stress relief are recommended. It is advised not to carry out welding in the hardened and tempered condition.
Q4: What industries use 36CrNiMo4 mechanical seamless tubes?
A: It is widely used in aircraft, automotive, and general engineering for highly stressed components like crankshafts and propeller shafts.
Q5: What shapes and sizes can be customized?
A: We offer round, square, rectangular, hexagonal, and octagonal shapes. Lengths typically range from 2000-12000mm or as per custom requirements.
Q6: What quality inspections are performed?
A: Standard inspections include UT (Ultrasonic Testing), Chemical Composition analysis, and Physical Properties testing, often certified by ISO, SGS, or Mill Certificates.
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