ALLOY CONSTRUCTIONAL STEEL

Crank shafts, automobile axle beams, connecting rods, lightly Stressed gears. Generaly used for moderately streesed parts of Motor Vehicles and general engineering works.

Typical Analysis In %

C Si Mn Cr W V Co Mo Ni
0.35-0.45 0.10-0.35 0.60-0.90 - S&P (Max) each 0.06 - -


Heat Treatment & Processing

Forging Temp. °C Annealing Temp. °C Hardening Temp. °C Quenching Medium Tempering Temp. °C Hardness Rockwell °C
1050-1100 800-900 1000 O Rapid Cooling 700-750 BHN 159-229 BHN 135-185


Equivalent Grades

BS 970 (REVISED) 1970-1972 BS 970-1955 En No. AISI/SAE DIN Japan U.S.S.R. IS
080M40 8 1040 - - 40
Grade Specification
- -
Crank shafts, Cylinders, Gears, sprockets. Mainly used in machine parts which require moderate wear resistance.

Typical Analysis In %

C Si Mn Cr W V Co Mo Ni
0.45-0.60 0.10-0.35 0.50-0.80 - S&P (Max) each 0.05 0.20 -


Heat Treatment & Processing

Forging Temp. °C Annealing Temp. °C Hardening Temp. °C Quenching Medium Tempering Temp. °C Hardness Rockwell °C
1000-800 750-780 760-820 W 150-200 59-62


Equivalent Grades

BS 970 (REVISED) 1970-1972 BS 970-1955 En No. AISI/SAE DIN Japan U.S.S.R. IS
070M55 9 1055 Ck55 - 55
Grade Specification
Cl.5 1875/1978
Axle shafts, Crank shafts, Gears, Connecting rods, Studs, bolts, Propeller shaft joint. Suitable for heat treated parts where high tensile and impact are required along with high endurance bending strength.

Typical Analysis In %

C Si Mn Cr W V Co Mo Ni
0.35-0.45 0.10-0.35 0.50-0.80 090-1.50 S&P (Max) each 0.05 0.20 -


Heat Treatment & Processing

Forging Temp. °C Annealing Temp. °C Hardening Temp. °C Quenching Medium Tempering Temp. °C Hardness Rockwell °C
1050-850 Normalise 650-700 820-850 820-840 O,W 530-670 BHN 201-277


Equivalent Grades

BS 970 (REVISED) 1970-1972 BS 970-1955 En No. AISI/SAE DIN Japan U.S.S.R. IS
709M40 19 4140 - - 30XM/35XM
Grade Specification
40CrMo3 5517/1978
Aircraft and heavy vehicle crank shafts, Connecting rods, gear Shafts, Chain parts, Clutches, Propeller shafts, Cam shafts, Spindles Screws, Studs, Pinions, tappets, boring bars. Preffred to be apply for heat treated components having large setions and subject to exacting requirements.

Typical Analysis In %

C Si Mn Cr W V Co Mo Ni
0.35-0.45 0.10-0.35 0.45-0.70 0.90-1.40 S&P (Max) each 0.05 0.20-0.35 1.30-1.80


Heat Treatment & Processing

Forging Temp. °C Annealing Temp. °C Hardening Temp. °C Quenching Medium Tempering Temp. °C Hardness Rockwell °C
1050-850 Normalise 650-700 820-850 820-840 O,W 530-670 BHN 201-277


Equivalent Grades

BS 970 (REVISED) 1970-1972 BS 970-1955 En No. AISI/SAE DIN Japan U.S.S.R. IS
817M40 24 4340 34CrNiMo6 - -
Grade Specification
40Ni6Cr4Mo3 5517/1978
Ball and Roller Bearings, Spinning tools, Beading Rolls, Punches And Dies. By its character this type of steel has high resisting nature against wear and can be usedfor components wich are subjected to severe abrasion, wear or hight surface loading.

Typical Analysis In %

C Si Mn Cr W V Co Mo Ni
0.95-0.34 0.10-0.35 0.30-0.75 1.00-1.60 S&P (Max) each 0.05 0.20 -


Heat Treatment & Processing

Forging Temp. °C Annealing Temp. °C Hardening Temp. °C Quenching Medium Tempering Temp. °C Hardness Rockwell °C
1050-850 Normalise 650-700 860-890 810-830 O,A 530-670 BHN 201-277


Equivalent Grades

BS 970 (REVISED) 1970-1972 BS 970-1955 En No. AISI/SAE DIN Japan U.S.S.R. IS
534A99 31 52100 100Cr6 - -
Grade Specification
103Cr2 4398/1972
Disc wheels, Grooved shafts, Cams, Gears, Heavy duty gears for aircraft, Heavy vehicle and automobile transmisson parts General engineering works,/Universal Joints. Mainly used for highly stress, machine parts wich are intended for cementation with high strength and core toughness.

Typical Analysis In %

C Si Mn Cr W V Co Mo Ni
0.15 0.10-0.35 0.30-0.60 0.60-1.10 S&P (Max) each 0.05 - 3.00-3.75


Heat Treatment & Processing

Forging Temp. °C Annealing Temp. °C Hardening Temp. °C Quenching Medium Tempering Temp. °C Hardness Rockwell °C
1050-850 Normalise 650-700 860-890 810-830 O,A 530-670 BHN


Equivalent Grades

BS 970 (REVISED) 1970-1972 BS 970-1955 En No. AISI/SAE DIN Japan U.S.S.R. IS
665M13 36A - 22NiCr14 - 20X2H4A
Grade Specification
13Ni3Cr80 4368/1967

EN-41B (NITRIDING STEELS)

We offer our clients with a wide range of EN-41B Nitriding Steels, which is sourced from trusted vendors of the market. These are offered in hardened and tempered conditions, in accordance with the client's specification. The EN 41 B Nitrading Steel is offered to our clients in round shape.

Typical Analysis In %

C Si Mn Cr W V Co Mo Ni
0.35-0.45 0.10-0.35 0.65 / max 1.40/1.80 - - - 0.10/0.25 0.40/max


Equivalent Grades

BS 970 (REVISED) 1970-1972 BS 970-1955 En No. AISI/SAE DIN Japan U.S.S.R. IS
905M31 41A - 34CrA1Mo6 - 20X2H4A
Grade Specification
40Cr7A110Mo2 5517/978

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