1, A higher Yield Strength, with good weld-ability.
2, Easy for mechanical property and the Low Temperature Enduring Assault Performance better that generally tubes
3, The external hard chrome plated after precise grinding, that tolerance meet with international standards.
CHEMICAL COMPOSITION(%) | ||||||||||
| ||||||||||
Steel Grade | C% | Mn% | Si% | S% | P% | V% | Ni% | Cr% | Mo% | Cu% |
1010 | 0.07-0.13 | 0.3-0.6 | 0.17-0.37 | ≤0.015 | ≤0.025 | ≤0.08 |
| ≤0.15 | ≤0.15 |
|
1020 | 0.18-0.23 | 0.3-0.6 | 0.17-0.37 | ≤0.015 | ≤0.025 | ≤0.08 |
| ≤0.15 | ≤0.15 |
|
ST52 | ≤0.18 | ≤1.7 | ≤0.5 | ≤0.025 | ≤0.03 | ≤0.15 | ≤0.5 | ≤0.3 | ≤0.1 | ≤0.3 |
MECHANICAL PROPERTIES | |||||
| |||||
Material | Tensile Strength | Yield Strength | Elogation | CHARPY | CONDITION |
1010 | 335 | 205 | 24 | - | Normalized |
1020 | 410 | 245 | 20 | - | Normalized |
ST52 | 470-630 | 345 | 20 | - | Normalized |
SUPPLY CONDITION | Ground and chrome plated |
CHROME THICKNESS | 20 to 30 micron |
SURFACE ROUGHNESS | Ra≤0.2 micron and Rt≤2 micro |
TOLERANCE ON DIA | ISO f7 on the diameter |
OVALITY | Half of the tolerance ISO f7 |
STRAGHNESS | ≤0.2MM/M |
SURFACE HARDNEDD | 850-1150 HV(vickers 100g) |
COHESION | No craks,breaking or detaching after thermic shock (warming up at 3200 celsius degrees and cooling in water) |
POROSITY | Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10 |
CORROSION RESISTANCE | Test in natural salt spray according to ASTM B117-120hours |
Results evaluation | accordin to ISO4540 RATING7-10 |
WELDABILITY | Good |
PACKING | Anti rust oil to be applied on material and each rod to be packed in paper sleeve |
CERTIFICATE | All certificate related with material heat treatment and plating is required |
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