S30451（304N）板，棒，管，鋼帶，線材，鍛件，鍛管，鍛板，鍛棒，圓棒，板材，薄板，無(wú)縫管，焊管，圓鋼，絲材

牌號(hào)

304N

美國(guó)UNS

S30451

ASTMA 959-2004

對(duì)應(yīng)標(biāo)準(zhǔn)

規(guī)定鍛造不銹鋼統(tǒng)—標(biāo)準(zhǔn)等級(jí)成份的指南

Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

S30451是在304的基礎(chǔ)上加入了氮不僅防止塑性降低，提高鋼的強(qiáng)度和加工硬化傾向，改善鋼的耐點(diǎn)蝕和晶間腐蝕性能。

S30451對(duì)應(yīng)牌號(hào)：

1、國(guó)標(biāo)GB-T標(biāo)準(zhǔn)：數(shù)字牌號(hào)：S30458、新牌號(hào)：06Cr19Ni10N、舊牌號(hào)：0Cr19Ni9N,

2、美標(biāo)：ASTMA標(biāo)準(zhǔn)：S30451，SAE標(biāo)準(zhǔn)：/，UNS標(biāo)準(zhǔn)：304N，

3、日標(biāo)JIS標(biāo)準(zhǔn)：SUS304N1，

4、德標(biāo)DIN標(biāo)準(zhǔn)：1.4315,

5、歐標(biāo)EN標(biāo)準(zhǔn)："X5CrNiN19-9、X5CrNiN18-

S30451（304N）化學(xué)元素成分含量(%)

S30451化學(xué)成分：

⑴碳C：≤0.08 ，

⑵硅Si：≤1.00，

⑶錳Mn：≤2.00，

⑷磷P：≤0.045，

⑸硫S：≤0.030，

⑹鉻Cr：18.00～20.00 ，

⑺鎳Ni：8.00～11.00，

⑻氮N：0.10~0.16。

三、S30451物理性能：

①密度密度(20℃)kg/dm3:"7.93,

②熔點(diǎn)/℃:1398~1454,

③比熱容(0~100℃)/kg/(kg.k):0.5",

④熱導(dǎo)率/w/(m.k)100℃-:"16.3",

⑸熱導(dǎo)率/w/(m.k)500℃-:"21.5",

⑥線脹系數(shù)/(10-6/k)0~100℃:"16.5",

⑦線脹系數(shù)/(10-6/k)0~514℃:"18.5",

⑧電阻率（20℃）/（Ω.mm2/m):"0.72",

⑨縱向彈性模量（20℃）/GPa:"196，⑩磁性:無(wú)。

五、S30451熱處理：①硬度HBW≤：固溶217，硬度HRB≤：95，②加熱溫度：1010~1150，③加熱方式：快冷。

S30451應(yīng)用領(lǐng)域：用于有一定耐蝕性要求，并要求較高強(qiáng)度和減輕重量的焊接設(shè)備和結(jié)構(gòu)部件。

S30451 (304N) plate, bar, tube, steel strip, wire, forging, forged tube, forged plate, forged bar, round bar, plate, thin plate, seamless pipe, welded pipe, round steel, wire

Brand

304N

United States UNS

S30451

ASTMA 959-2004

Corresponding standards

Guidelines for Specifying Wrought Stainless Steel Systems - Standard Grade Composition

Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

On the basis of 304, S30451 added nitrogen not only to prevent the plasticity from decreasing, but also to improve the strength and work hardening tendency of the steel, and to improve the pitting corrosion resistance and intergranular corrosion resistance of the steel.

S30451 corresponding brand:

1. National standard GB-T: digital brand: S30458, new brand: 06Cr19Ni10N, old brand: 0Cr19Ni9N,

2. American standard: ASTMA standard: S30451, SAE standard:/, UNS standard: 304N,

3. Japanese JIS standard: SUS304N1,

4. German standard DIN standard: 1.4315,

5. European standard EN standard: "X5CrNiN19-9, X5CrNiN18-

S30451 (304N) chemical element content (%)

S30451 Chemical composition:

⑴ Carbon C: ≤ 0.08,

⑵ Silicon Si: ≤ 1.00,

⑶ Mn: ≤ 2.00,

(4) Phosphorus P: ≤ 0.045,

(5) Sulfur S: ≤ 0.030,

(6) Chromium Cr: 18.00 ～ 20.00,

(7) Ni: 8.00 ～ 11.00,

(8) Nitrogen N: 0.10~0.16.

3、 S30451 physical performance:

① Density density (20 ℃) kg/dm3: "7.93,

② Melting point/℃: 1398~1454,

③ Specific heat capacity (0~100 ℃)/kg/(kg. k): 0.5 ",

④ Thermal conductivity/w/(m.k) 100 ℃ -: "16.3",

⑸ Thermal conductivity/w/(m.k) 500 ℃ -: "21.5",

⑥ Linear expansion coefficient/(10-6/k) 0~100 ℃: "16.5",

⑦ Linear expansion coefficient/(10-6/k) 0~514 ℃: "18.5",

⑧ Resistivity (20 ℃)/(Ω. mm2/m): "0.72",

⑨ Longitudinal elastic modulus (20 ℃)/GPa: "196, ⑩ Magnetic: none.

5、 S30451 heat treatment: ① hardness HBW ≤: solution 217, hardness HRB ≤: 95, ② heating temperature: 1010~1150, ③ heating method: fast cooling.

Application field of S30451: It is used for welding equipment and structural components that have certain corrosion resistance requirements and require higher strength and weight reduction