|
A FEW REPRESENTATIVE STEEL GRADES PRODUCED AT
PSM AND THEIR APPLICATIONS |
|
SR. No |
STEEL GRADE |
CHEMICAL COMPOSITION (Wt %) |
NEAREST GERMAN (BOHLER) GRADE |
TYPICAL APPLICATIONS | |||||||||
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu | Others | ||||
1. |
AISI 1534 |
0.30 0.37 |
0.15 0.35 |
1.20 1.50 |
max. 0.04 |
max. 0.05 |
— |
— |
— |
— |
— |
1.1165 (V 930) |
Special constructional steel which develop high yield tensile and fatigue strength as well as toughness after heat treatment. |
2. |
AISI 1137 |
0.32 0.39 |
0.10 0.30 |
1.35 1.65 |
max. 0.03 |
0.08 0.13 |
— |
— |
— |
— |
— |
(Z 912) |
Parts in mechanical engineering and engine construction combining high strength and good machining properties. |
3. |
AISI 1045 |
0.43 0.50 |
0.15 0.35 |
0.60 0.90 |
max. 0.040 |
max. 0.050 |
— | — | — |
max. 0.35 |
— |
1.1191 — |
Parts of general engineering, automobiles, vehicles axles, coupling parts, shafts spindle etc., |
4. |
AISI 5140 |
0.38 0.43 |
0.15 0.35 |
0.70 0.90 |
max. 0.035 |
max. 0.040 |
0.70 0.90 |
— |
— |
max. 0.35 |
— |
1.7035 (V 500) |
Highly stressed components of automobiles, vehicles and general mechanical engineering. |
5. |
SUP-9 (JIS-G 4801) |
0.52 0.60 |
0.15 0.35 |
0.65 0.95 |
max. 0.035 |
max. 0.035 |
0.65 0.95 |
— |
— |
max. 0.35 |
— |
1.7176 AISI-5160 |
Leaf springs for automobiles/heavy duty vehicle/railways. Torsion bars and Coil springs. |
6. |
AISI E 52100 |
0.98 1.10 |
0.20 0.30 |
0.25 0.45 |
max. 0.025 |
max. 0.025 |
1.30 1.60 |
— |
— |
max. 0.30 |
— |
1.3505 (R 100) |
Ball and roller bearing parts e.g. balls, rollers, needless, cones, rings and discs upto 30mm finished thickness for service temperature upto 200°C |
7. |
AISI 4340 |
0.38 0.43 |
0.15 0.35 |
0.60 0.80 |
max. 0.035 |
max. 0.040 |
0.70 0.90 |
0.20 0.30 |
1.65 2.00 |
— | — |
1.6659 (V 121) |
Highly stressed components of large cross section e.g. air craft, automotive & machines propeller/gear/crank shafts, connecting rods, landing gear components etc. |
8. |
V-354 |
0.15 0.18 |
max. 0.20 |
0.80 1.10 |
max. 0.020 |
max. 0.015 |
1.25 1.50 |
0.80 1.00 |
— |
max. 0.35 |
V 0.2-0.3 |
1.7735 |
Required for high tensile components at service temperature ranging from - 75 °C to 500 °C e.g. air craft industry, screws and cylinders for extrusion tools. |
9. |
AISI 8620 |
0.18 0.23 |
0.15 0.35 |
0.70 0.90 |
max. 0.035 |
max. 0.040 |
0.40 0.60 |
0.15 0.25 |
0.40 0.70 |
max. 0.35 |
— |
1.6523 (E 116) |
Parts of large cross section requiring toughness and core strength e.g. gears, crank shafts, shafts for aircraft and truck and for general mechanical engineering. |
10. |
AISI 304 |
max. 0.08 |
max. 1.00 |
max. 2.00 |
max. 0.045 |
max. 0.030 |
18.00 20.00 |
— |
8.00 10.50 |
max. 0.35 |
N 0.05 0.080 |
1.4301 (A 500) |
Cutlery, medical, kitchen, automotive and sanitary equipment |
11. |
AISI 304L |
max. 0.03 |
max. 1.00 |
max. 2.00 |
max. 0.045 |
max. 0.030 |
18.00 20.00 |
— |
8.00 12.00 |
max. 0.35 |
N 0.050 0.080 |
1.4306 (A 604) |
Chemical industry, pharmaceutical industry, nuclear engineering. |
12. |
AISI 316 |
max. 0.08 |
max. 1.00 |
max. 2.00 |
max. 0.045 |
max. 0.030 |
16.00 18.00 |
2.00 3.00 |
10.00 14.00 |
— |
— |
1.4436 (A 100) |
Textile, paper, synthetic fiber, film, photography, dyeing industry, medical and hospital equipment, special tanker construction, springs. |
13. |
AISI 316L |
max. 0.03 |
max. 1.00 |
max. 2.00 |
max. 0.045 |
max. 0.030 |
16.00 18.00 |
2.00 3.00 |
10.00 14.00 |
— |
— |
1.4404 (A 200) |
Dyeing sulfite pulp, wood, chemical and rayon industries, dairy equipment. |
14. |
AISI 347 |
max. 0.08 |
max. 1.00 |
max. 2.00 |
max. 0.045 |
max. 0.030 |
17.00 19.00 |
— |
9.00 13.00 |
max. 0.35 |
Nb+Ta=10xC N 0.05-0.08 |
1.4450 (A 750) |
Food processing industry, paper, pulp, nitric acid plant, production of explosives, oil grease and soap production, leather industry, nuclear engineering. |
15. |
AISI 410 |
max. 0.15 |
max. 1.00 |
max. 1.00 |
max. 0.040 |
max. 0.030 |
11.50 13.50 |
— |
max. 0.50 |
max. 0.35 |
AI 0.03max |
1.4006 (N 100) |
Turbine construction, mechanical engineering, papers textile and dairy machines, medical equipment, steam and water valves and fittings, kitchen appliances, sport goods. |
16. |
AISI 430F |
max. 0.12 |
max. 1.00 |
max. 1.25 |
max. 0.060 |
min 0.150 |
16.00 18.00 |
max. 0.60 |
max. 0.50 |
max. 0.30 |
AI 0.02max |
1.4104 (N 310) |
Free cutting steel for components subject to corrosion in mechanical and plant engineering. Also for mass produced items like screws, nuts and bolts. |
17. |
AISI 440B |
0.75 0.95 |
max. 1.00 |
max. 1.00 |
max. 0.040 |
max. 0.03 |
16.00 18.00 |
max. 0.75 |
max. 0.50 |
max. 0.30 |
V 0.08-0.12 |
1.4112 (N 685) |
Cutting tools requiring superior corrosion resistance, detergent resistant cutlery and for wear resistant components. |
18. |
AISI D3 |
2.00 2.35 |
0.25 0.45 |
max. 0.60 |
max. 0.030 |
max. 0.025 |
11.00 13.00 |
max. (0.8) |
max. 0.30 |
max. 0.30 |
(W 0.75 max) (V 0.8 max) |
1.2436 (K 107) |
Punches for heavy duty and complicated cutting dies and trimming tools. High performance shear blades, deburring tools and cutters for sheet, wire nail etc. |
19. |
AISI H13 |
0.32 0.45 |
0.80 1.20 |
0.20 0.45 |
max. 0.025 |
max. 0.025 |
4.75 5.50 |
1.25 1.75 |
max. 0.30 |
max. 0.30 |
V 0.80-1.20 AI 0.10max |
1.2344 (W 302) |
Heavy duty hot work dies. Mandrels and tubes and trucks for hot extrusion. Die casting equipment, hot shear blades and plastic molding dies. |
20. |
AISI T4 |
0.70 0.80 |
0.20 0.40 |
0.20 0.40 |
max. 0.030 |
max. 0.03 |
3.75 4.50 |
0.70 1.00 |
— |
— |
V 0.80-1.20 W 17.25-18.75 Co 4.25-5.75 |
1.3255 |
Lathe and planning tools with eminent cutting strength and toughness. |
21. |
AISI 310S |
max. 0.08 |
max. 1.50 |
max. 2.00 |
max. 0.045 |
max. 0.030 |
24.00 26.00 |
— |
19.00 22.00 |
— |
— |
1.4841 (H 532) |
Heat treatment furnace parts, grate, fitting, door, fan, super heated suspension, valves, spindles, bolts, nuts, rivets and tubes and tubular components in petroleum industry. |
Note:- Elements given in ( ) are optional.
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