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		<h1>Thép Tròn Đặc SNB7&#x002F;SNB16</h1>
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			<li>Thứ hai - 13/10/2025 21:42</li>
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			Thép Tròn Đặc SNB7/SNB16 - Công Ty Hoàng Thiên chuyên nhập khẩu và phân phối các loại Thép Tròn Đặc SNB7/SNB16 sản phẩm có đầy đủ COCQ, hóa đơn xuất xứ từ các nhà máy lớn như Đài Loan, Trung Quốc, Nhật Bản.
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<figure class="image" style="display:inline-block"><img alt="Thép Tròn Đặc SNB7/SNB16" height="383" src="https://hoangthiensteel.com/uploads/news/2025/9_1.jpg" width="680" />
<figcaption><strong>Thép Tròn Đặc SNB7/SNB16</strong></figcaption>
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&nbsp;

<div style="text-align: center;"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:36px;"><a href="https://hoangthiensteel.com/thep-tron-dac/">THÉP TRÒN ĐẶC SNB7/SNB16</a></span></b></span></span></span></div>
<br  />
<br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Thép Tròn Đặc SNB7/SNB16</b> là thép hợp kim dùng cho bu-lông chịu nhiệt độ cao theo tiêu chuẩn JIS G4107.</span></span></span><br  />
<br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Thành phần hoá học &amp; tính chất cơ lý</b></span></span></span><br  />
<br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Theo nhà sản xuất thép SNB7 có thành phần và đặc tính như sau:</span></span></span><br  />
&nbsp;
<table class="Table">
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Nguyên tố</b></span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Phạm vi (%)</b></span></span></span></td>
		</tr>
	<tbody>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">C</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,38 – 0,48</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Si</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,20 – 0,35</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Mn</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,75 – 1,00</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">P</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≤ 0,04</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">S</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≤ 0,04</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Cr</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,8 – 1,1</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Mo</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,15 – 0,25</span></span></span></td>
		</tr>
	</tbody>
</table>
<br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Tính chất cơ lý:</b></span></span></span><br  />
<br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Giới hạn bền (tensile) ≥ 860 MPa</span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Độ bền kéo chịu lực cao (≥ 726 MPa)</span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Độ giãn dài tối thiểu ≥ 16 %</span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Ứng dụng:</b></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Thép SNB7 thường dùng để làm bu-lông, ốc vít, và các chi tiết chịu lực cao, chịu nhiệt trong các môi trường làm việc khắc nghiệt.</span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Trong tiêu chuẩn JIS G4107, SNB7 là loại thép bu-lông cho môi trường nhiệt độ cao.</span></span></span><br  />
<br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Dưới đây là thông tin về <b>thép tròn đặc SNB16 (JIS SNB16, theo tiêu chuẩn JIS G 4107)</b>:</span></span></span><br  />
<br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Thành phần hóa học</b></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Thành phần hóa học của SNB16 như sau:</span></span></span><br  />
&nbsp;
<table class="Table">
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Nguyên tố</b></span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Phạm vi (%)</b></span></span></span></td>
		</tr>
	<tbody>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">C</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,36 – 0,44</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Si</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,20 – 0,35</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Mn</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,45 – 0,70</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">P</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≤ 0,04</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">S</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≤ 0,04</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Cr</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,80 – 1,15</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Mo</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,50 – 0,65</span></span></span></td>
		</tr>
		<tr>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">V</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">0,25 – 0,35</span></span></span></td>
		</tr>
	</tbody>
</table>
<br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Tính chất cơ lý / đặc tính cơ học</b></span></span></span><br  />
<br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Tính chất cơ lý điển hình của SNB16 khi thép được xử lý nhiệt thích hợp (ví dụ quenching + tempering hoặc tôi và ủ) như sau:</span></span></span>

<table class="Table">
		<tr>
			<td style="width:81px; padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Đường kính (d)</b></span></span></span></td>
			<td style="width:153px; padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Giới hạn chảy (yield) tối thiểu (MPa)</b></span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Giới hạn bền kéo (tensile) tối thiểu (MPa)</b></span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Độ giãn dài tối thiểu (%)</b></span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Khả năng thu nhỏ mặt cắt (%)</b></span></span></span></td>
		</tr>
	<tbody>
		<tr>
			<td style="width:81px; padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">d ≤ 63 mm</span></span></span></td>
			<td style="width:153px; padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 725 MPa</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 860 MPa</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 18 %</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 50 %</span></span></span></td>
		</tr>
		<tr>
			<td style="width:81px; padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">63 mm &lt; d ≤ 100 mm</span></span></span></td>
			<td style="width:153px; padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 655 MPa</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 760 MPa</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 17 %</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 50 %</span></span></span></td>
		</tr>
		<tr>
			<td style="width:81px; padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">100 mm &lt; d ≤ 120 mm</span></span></span></td>
			<td style="width:153px; padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 590 MPa</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 690 MPa</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 16 %</span></span></span></td>
			<td style="padding:.100px .100px .100px .100px"><span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">≥ 50 %</span></span></span></td>
		</tr>
	</tbody>
</table>
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Lưu ý</b>: Các giá trị này là giá trị “tối thiểu” theo tiêu chuẩn; trong thực tế, tùy vào quy trình xử lý nhiệt, chất lượng luyện kim, kích thước thanh thép, các giá trị thực tế có thể cao hơn.</span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b>Đặc điểm &amp; ứng dụng</b></span></span></span>

<ul>
	<li style="margin-bottom:11px"><span style="font-size:12pt"><span style="tab-stops:list .5in"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">SNB16 là loại <b>thép hợp kim Cr‑Mo‑V</b> (crom – molybden – vanadi) dành cho bu lông, chi tiết chịu lực cao trong môi trường nhiệt độ cao. </span></span></span></span></li>
	<li style="margin-bottom:11px"><span style="font-size:12pt"><span style="tab-stops:list .5in"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">SNB16 được thiết kế để hoạt động tốt trong điều kiện nhiệt độ cao, chịu lực tốt hơn SNB7 nhờ việc bổ sung vanadi, giúp cải thiện khả năng chống biến dạng khi chịu nhiệt lâu dài (“creep resistance”). </span></span></span></span></li>
	<li style="margin-bottom:11px"><span style="font-size:12pt"><span style="tab-stops:list .5in"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Nhiệt độ tempering tối thiểu được quy định là khoảng <b>650 °C trở lên</b> để đạt các đặc tính cơ học tốt. </span></span></span></span></li>
	<li style="margin-bottom:11px"><span style="font-size:12pt"><span style="tab-stops:list .5in"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif">Vật liệu SNB16 vẫn có thể sử dụng tới khoảng <b>600 °C</b> với ứng suất kéo cho phép tương ứng trong ứng dụng nhiệt độ cao.</span></span></span></span></li>
</ul>
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