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信任、信用与价值。大国钢铁·韩民金属致力于确实、准确地提供客户所需的价值，赢得客户的信任与信用。
凝聚20年的专业经验，善用专业人才与各类网络，并构建智能工厂系统，我们竭尽全力赢得您的信赖与信任。
大国钢铁是一家将特殊钢·不锈钢·合金材料按客户要求规格进行切割加工并交付的材料专业企业。从接单、材料准备、切割、精密加工、尺寸确认到包装出货，全程管理。
通过智能工厂系统对现场作业进行数字化监控并实现远程控制，实现快速准确的交期和一致的品质。
采用符合规格的专用设备进行精密切割。
主要钢种的化学成分(%)。（左右滚动）
| 강종 / Grade | UNS No | 규격 / Spec | C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Fe | Al | Ti | W | Co | OTHER |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SM20C | – | – | 0.18~0.23 | 0.15~0.35 | 0.30~0.60 | 0.03 | 0.035 | 0.2 | – | – | 0.3 | – | – | – | – | – | – |
| SM45C | – | – | 0.42~0.48 | 0.15~0.35 | 0.60~0.90 | 0.03 | 0.035 | 0.2 | – | – | 0.3 | – | – | – | – | – | – |
| SCM440 | – | – | 0.38~0.43 | 0.15~0.35 | 0.60~0.85 | 0.03 | 0.03 | 0.25 | 0.90~1.20 | 0.15~0.30 | 0.3 | – | – | – | – | – | – |
| AISI 4140 | – | – | 0.38~0.43 | 0.15~0.35 | 0.75~1.00 | 0.035 | 0.04 | – | 0.80~1.10 | 0.15~0.25 | – | – | – | – | – | – | – |
| SNCM439 | – | – | 0.36~0.43 | 0.15~0.35 | 0.60~0.90 | 0.03 | 0.03 | 1.60~2.00 | 0.60~1.00 | 0.15~0.30 | – | – | – | – | – | – | – |
| AISI 4340 | – | – | 0.38~0.43 | 0.15~0.35 | 0.60~0.80 | 0.035 | 0.04 | 1.65~2.00 | 0.70~0.90 | 0.20~0.30 | – | – | – | – | – | – | – |
| F1554 Gr.36 | – | – | 0.28 | – | – | 0.05 | 0.06 | – | – | – | 0.2 | – | – | – | – | – | – |
| F1554 Gr.55 | – | – | 0.3 | 0.5 | 1.35 | 0.04 | 0.05 | – | – | – | 0.2 | – | – | – | – | – | – |
| F1554 Gr.105 | – | – | – | – | – | 0.048 | 0.058 | – | – | – | 0.2 | – | – | – | – | – | – |
| STS304 | – | – | 0.08 | 1 | 2 | 0.045 | 0.03 | 8.00~10.50 | 18.0~20.0 | – | – | – | – | – | – | – | – |
| B8 CL1 , CL2 | – | A193/A320 | 0.08 | 1 | 2 | 0.045 | 0.03 | 8.0~11.0 | 18.0~20.0 | – | – | – | – | – | – | – | – |
| A2 50,70 | – | – | 0.1 | 1 | 2 | 0.05 | 0.03 | 8.0~19.0 | 15.0~19.0 | – | – | – | – | – | – | – | – |
| STS316 | – | – | 0.08 | 1 | 2 | 0.045 | 0.03 | 10.0~14.0 | 16.0~18.0 | 2.00~3.00 | – | – | – | – | – | – | – |
| B8M CL1,CL2 | – | A193/A320 | 0.08 | 1 | 2 | 0.045 | 0.03 | 10.0~14.0 | 16.0~18.0 | 2.00~3.00 | – | – | – | – | – | – | – |
| A4 70,80 | – | – | 0.08 | 1 | 2 | 0.045 | 0.03 | 10.0~15.0 | 16.0~18.5 | 2.00~3.00 | – | – | – | – | – | – | – |
| Ni 200 | N02200 | B160 | 0.15 | 0.35 | 0.35 | – | 0.01 | 99 | – | – | 0.25 | 0.4 | – | – | – | – | – |
| Monel 400 | N04400 | B164 | 0.3 | 0.5 | 2 | – | 0.024 | 63 | – | – | 28.0~34.0 | 2.5 | – | – | – | – | – |
| Monel K500 | N05500 | B865 | 0.18 | 0.5 | 1.5 | – | 0.01 | 63.0~70.0 | – | – | 27.0~33.0 | 2 | 2.30~3.15 | 0.35~0.85 | – | – | – |
| Inconel 718 | N07718 | B637 | 0.08 | 0.35 | 0.35 | 0.015 | 0.015 | 50.0~55.0 | 17.0~21.0 | 2.8~3.3 | 0.3 | Remainder | 0.20~0.80 | 0.65~1.15 | – | – | 1.0 Cb+Ta 4.75~5.50 |
| C-276 | N10276 | B574 | 0.01 | 0.08 | 1 | 0.04 | 0.03 | Remainder | 14.5~16.5 | 15.0~17.0 | – | 4.0~7.0 | – | – | 3.0~4.5 | – | 2.5 B. max 0.35 |
| 904L | N08904 | – | 0.02 | 1 | 2 | 0.04 | 0.03 | 23.0~28.0 | 19.0~23.0 | 4.0~5.0 | 1.0~2.0 | Balance | – | – | – | – | N:0.10 |
| Alloy625 | N06625 | B446 | 0.1 | 0.5 | 0.5 | 0.015 | 0.015 | 58 | 20.0~23.0 | 8.0~10.0 | – | 5 | 0.4 | 0.4 | – | 1 | Cb+Ta 3.15~4.15 |
| 660 | S66286 | A453 | 0.08 | 0.40~1.00 | 0.40~1.00 | 0.04 | 0.03 | 24.0–28.0 | 12.0–15.0 | 2.0–3.5 | 0.5 | – | 0.35 | 1.80–2.10 | – | – | – |
| Incoloy 825 | N08825 | B425 | 0.05 | 0.5 | 1 | – | 0.03 | 38.0~46.0 | 19.5~23.5 | 2.5~3.5 | 1.5~3.0 | min 22.0 | 0.2 | 0.60~1.20 | – | – | – |
| Incoloy 925 | N08925 | – | 0.03 | 0.5 | 1 | – | 0.03 | 42.0~46.0 | 19.5~22.5 | 2.5~3.5 | 1.5~3.0 | min 22.0 | 0.10~0.50 | 1.9~2.4 | – | – | Cb. max 0.50 |
| F51 | S31803 | A182/A276/A479 | 0.03 | 1 | 2 | 0.03 | 0.02 | 4.5~6.5 | 21.0~23.0 | 2.5~3.5 | – | – | – | – | – | – | N:0.08~0.20 |
| F60 | S32205 | A182/A276/A479 | 0.03 | 1 | 2 | 0.03 | 0.02 | 4.5~6.5 | 22.0~23.0 | 3.0~3.5 | – | – | – | – | – | – | N:0.14~0.20 |
| F53 | S32750 | A182/A479 | 0.03 | 0.8 | 1.2 | 0.035 | 0.02 | 6.0~8.0 | 24.0~26.0 | 3.0~5.0 | 0.5 | – | – | – | – | – | N:0.24~0.32 |
| F55 | S32760 | A182/A276/A479 | 0.03 | 1 | 1 | 0.03 | 0.01 | 6.0~8.0 | 24.0~26.0 | 3.0~4.0 | 0.50~1.00 | – | – | – | 0.50~1.00 | – | N:0.20~0.30 |
| F44 | S31254 | A182/A276/A479 | 0.02 | 0.8 | 1 | 0.03 | 0.01 | 17.5~18.5 | 19.5~20.5 | 6.0~6.5 | 0.50~1.00 | – | – | – | – | – | N:0.18–0.22 |
| F61 | S32550 | A182/A276/A479 | 0.04 | 1 | 1.5 | 0.04 | 0.03 | 4.5~6.5 | 24.0~27.0 | 2.9~3.9 | 1.50~2.50 | – | – | – | – | – | N:0.10~0.25 |
| XM-19 | S20910 | A193/A276/A479 | 0.06 | 1 | 4.0~6.0 | 0.045 | 0.03 | 11.5~13.5 | 20.5~23.5 | 1.50~3.00 | – | – | – | – | – | – | N:0.20~0.40 Cb:0.10~0.30 V:0.10~0.30 |
| B8S | S21800 | A193 | 0.1 | 3.5~4.5 | 7.0~9.0 | 0.06 | 0.03 | 8.0~9.0 | 16.0~18.0 | – | – | – | – | – | – | – | N:0.08~0.18 |
基于设备数据实时采集与AI分析的智能工厂，实现质量提升 · 减少不良 · 准时交付。
实时采集所有切割设备的运行与生产数据，通过分析积累的数据，实现质量提升、减少不良和准时交付。
成分分析与尺寸检验数据记录于全工艺流程，出货前全数确认，确保品质一致。
通过AI分析积累的设备与生产数据，提前发现不良因素并防止再次发生。
实时生产监控可准确预测交期，远程控制灵活应对紧急订单。
从接单到出货的所有作业均有数字记录，咨询时可随时查询准确的生产信息。
从碳钢·合金钢到不锈钢、镍·特殊合金，广泛经营。
可代理主要船级社的检验业务。
可按各种等级及规格进行热处理（ASTM、JIS等），并对应加工后交付。
各类试样可依据国际标准由KOLAS认证机构进行试验·分析。
