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No, ASTM A514 is not stainless steel. It is a high-strength low-alloy (HSLA) steel, specifically a quenched and tempered carbon-alloy steel designed for structural applications requiring superior strength and toughness, but without the high corrosion resistance characteristic of stainless steels. Stainless steels, like AISI 304 or S17400, contain at least 10.5% chromium for corrosion resistance, whereas A514 is alloyed primarily for mechanical properties with lower chromium levels (e.g., 0.40-0.65% in some grades). As a leading manufacturer and exporter, Gangsteel specializes in ASTM A514/A514M steel plate, providing high-quality alloy plates for applications where strength, not corrosion resistance, is paramount.
A514 is an alloy steel focused on high yield strength, while stainless steel prioritizes corrosion resistance. Below is a comparison table highlighting these differences:
|
Aspect |
ASTM A514 (Alloy Steel) |
Typical Stainless Steel (e.g., AISI 304) |
|---|---|---|
|
Primary Purpose |
High strength and toughness for structural use |
Corrosion resistance in harsh environments |
|
Chromium Content |
0.40-2.00% (varies by grade) |
18-20% |
|
Yield Strength (min, ksi) |
90-100 |
30-40 |
|
Heat Treatment |
Quenched and tempered |
Annealed or cold-worked |
|
Corrosion Resistance |
Moderate (not primary feature) |
Excellent (forms passive oxide layer) |
|
Typical Applications |
Bridges, cranes, mining equipment |
Food processing, chemical tanks, architecture |
|
Weldability |
Good with preheat |
Excellent, but may require specific fillers |
Gangsteel's ASTM A514/A514M steel plate offers grades like astm a514 grade f for enhanced abrasion resistance, distinct from stainless properties.
To illustrate why A514 isn't stainless, here's the typical composition for Grade B (in weight %):
|
Element |
Content (%) |
|---|---|
|
C |
0.12-0.21 |
|
Mn |
0.70-1.00 |
|
P (max) |
0.035 |
|
S (max) |
0.035 |
|
Si |
0.20-0.35 |
|
Cr |
0.40-0.65 |
|
Mo |
0.15-0.25 |
|
V |
0.03-0.08 |
|
Ti |
0.01-0.03 |
|
B |
0.0005-0.005 |
Low chromium compared to stainless steels confirms it's not corrosion-focused.
A514 is used in high-stress environments like heavy equipment, not typically where stainless is needed (e.g., marine or chemical). For corrosion needs, consider stainless alternatives. Gangsteel's A514 plates, like astm a514 grade q, excel in strength-focused uses.
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