Hastelloy B2 Fasteners

Hastelloy B2 Fasteners are nickel-molybdenum-based alloy fasteners known for strong resistance to hydrochloric acid and reducing agents. Metracore Alloys is a reliable Hastelloy B2 fastener manufacturer, with precision to meet the demanding needs of the industrial sector. It offers excellent toughness and stability across a wide range of temperatures. Chemically, Hastelloy B2 contains nickel as the base with 26–30% molybdenum, limited iron, chromium, and cobalt. Its mechanical profile includes a tensile strength of 760 MPa, a yield strength of 350 MPa, an elongation of 40%, a density of 9.2 g/cm³, and a melting point of 1370 °C. These features make the alloy reliable under high stress and corrosion-prone conditions.

Hastelloy B2 Fasteners, Hastelloy B2 Fasteners Suppliers, Hastelloy B2 Fasteners Manufacturers, Hastelloy B2 Fasteners Manufacturers In India

Our range of Hastelloy B2 Fasteners is available in lengths from 3 mm to 200 mm and sizes from M3 to M56, including 3/6″ to 2″, with custom options offered. They come in a variety of forms, including bolts, nuts, screws and washers. Their main characteristics are high resistance to pitting, stress corrosion cracking, and great weldability. These fasteners are designed to maintain strength and stability in both oxidizing and reducing atmospheres.

Hastelloy B2 fasteners are commonly utilized in industries that expose equipment to severe chemicals. They are a top choice in chemical processing units for handling hydrochloric acid, sulfuric acid, and phosphoric acid. In the pharmaceutical sector, they are used in reactors, heat exchangers and piping systems because they do not contaminate sensitive processes. In marine environments, these fasteners resist seawater corrosion, making them suitable for use in pumps, valves, and offshore constructions. The manufacturing process includes forging, machining, and heat treatment to ensure that the fasteners can endure pressure and corrosive attack over time.

Hastelloy B2 Bolts, Hastelloy B2 Nuts, Hastelloy B2 Screws, Hastelloy B2 Washers

All fasteners are manufactured under ASTM B574 / ASME SB574 standards and tested for quality and performance. Products are delivered with certifications and proper documentation. To avoid damage during transit, each order is carefully packed in durable materials, ensuring that Hastelloy B2 bolts, nuts, screws, and washers reach clients in perfect condition.

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Table of Content

Hastelloy B2 Fasteners Specification

Types of Hastelloy B2 Fasteners

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Technical Details of Hastelloy B2 Fasteners

Equivalent Grades of Hastelloy B2 Fasteners

STANDARD	WERKSTOFF NR.	UNS
Hastelloy B2	2.4617	N10665

Chemical Composition of Hastelloy B2 Fasteners

Grade	C	Mn	Si	S	Co	Ni	Cr	Fe	Mo	P
Hastelloy B2	0.02 max	1.0 max	0.1 max	0.03 max	1.0 max	Bal	1.0 max	2.0 max	26 – 30	0.04 max

Mechanical Properties of Hastelloy B2 Fasteners

Element	Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
Hastelloy B2	9.2 g/cm3	1370 °C (2500 ºF )	Psi – 1,10,000 , MPa – 760	Psi – 51000 , MPa – 350	40 %

Dimensions of Hastelloy B2 Bolts Fasteners

Nominal Size Of D	Diameter Of Body		ASTM A193 Head Thickness		ASTM A193 Flats Acro		ASTM A193 Corners Acro
	D (MAXIMUM)	D (MINIMUM)	H (MAXIMUM)	H (MINIMUM)	F (MAXIMUM)	F (MINIMUM)	C (MAXIMUM)	C (MINIMUM)
m10	10.00	9.78	6.63	6.17	17.00	15.73	18.48	17.77
m12	12.00	11.73	7.76	4.24	19.00	17.73	20.78	20.03
m14	14.00	13.73	9.09	8.51	22.00	20.67	24.25	23.35
m16	16.00	15.73	10.32	9.68	24.00	23.67	27.71	26.75
m20	20.00	19.67	12.88	12.12	30.00	29.16	34.64	32.95
m24	24.00	23.67	15.44	14.56	36.00	35.00	41.57	39.55
m30	30.00	29.67	19.48	17.92	46.00	45.00	53.12	50.85
m36	36.00	35.61	23.38	21.63	55.00	53.80	63.51	60.79
m42	42.00	41.38	26.97	25.03	65.00	62.90	75.06	71.71
m48	48.00	47.38	31.07	28.93	75.00	72.60	86.60	82.76
m56	56.00	55.26	36.2	33.80	85.00	82.20	98.15	93.71
m64	64.00	63.26	41.32	38.68	95.00	91.80	109.70	104.65
m72	72.00	71.26	46.45	43.55	105.00	101.40	121.24	115.60
m80	80.00	79.26	51.58	48.42	115.00	111.00	132.72	126.54
m90	90.00	89.13	57.74	54.26	130.00	125.50	150.11	143.07
m100	90.00	99.13	63.9	60.10	145.00	140.00	167.43	159.60

Hastelloy B2 Nuts Fasteners Dimensions

Nominal Size Of Thread Diameter		F			G		H
		Across Flats Width			Across Corners Width		Thickness Row
		Basic	Maximum	Minimum	Maximum	Minimum	Basic	Maximum	Minimum
1/4	.2500	7/16	.438	.428	.505	.488	7/32	.226	.212
5/16	.3125	1/2	.500	.489	.577	.557	17/64	.273	.258
3/8	.3750	9/16	.562	.551	.650	.628	21/64	.337	.479
7/16	.4375	11/16	.688	.675	.794	.768	3/8	.385	.365
1/2	.5000	3/4	.750	.736	.866	.840	7/16	.448	.427
9/16	.5625	7/8	.875	.861	1.010	.982	31/64	.496	.473
5/8	.6250	15/16	.938	.922	1.083	1.051	35/64	.559	.535
3/4	.7500	1-1/8	1.125	1.088	1.299	1.240	41/64	.665	.617
7/8	.8750	1-5/16	1.312	1.269	1.516	1.447	3/4	.776	.724
1	1.0000	1-1/2	1.500	1.450	1.732	1.653	55/64	.887	.831
1-1/8	1.1250	1-11/16	1.688	1.631	1.949	1.859	31/32	.999	.939
1-3/8	1.3750	2-1/16	2.062	1.994	2.382	2.273	1-11/64	1.206	1.138
1-1/2	1.500	2-1/4	2.250	2.175	2.598	2.480	1-9/32	1.ASTM A194 GR. 8	1.245
1-5/8	1.6250	2-7/16	2.438	2.356	2.815	2.686	1-25/64	1.429	1.353
1-3/4	1.7500	2-5/8	2.625	2.538	3.031	2.893	1-1/2	1.540	1.460
2	2.0000	3	3.000	2.900	3.464	3.306	1-23/32	1.763	1.675
2-1/4	2.2500	3-3/8	3.375	3.263	3.897	3.719	1-15/16	1.986	1.890
2-1/2	2.5000	3-3/4	3.750	3.625	4.330	4.133	2-5/32	2.209	2.105
2-3/4	2.7500	4-1/8	4.125	3.988	4.763	4.546	2-3/8	2.431	2.319

Hastelloy B2 Flat Washers Fasteners Dimensions

Bolt Size	USS			SAE
Bolt Size	ID (in.)	OD (in.)	Thickness	ID (in.)	OD (in.)	Thickness
5/32 (#8)	–	–	–	0.188	0.438	.036/.065
1/8 (#6)	–	–	–	0.156	0.375	.036/.065
7/32 (#12)	–	–	–	0.250	0.562	.051/.080
3/16 (#10)	0.250	0.560	.036/.065	0.220	0.500	.036/.065
1/4 (#14)	0.312	0.734	.051/.080	0.281	0.625	.051/.080
3/8	0.438	1.000	.064/.104	0.406	0.812	.051/.080
5/16	0.375	0.875	.064/.104	0.344	0.688	.051/.080
7/16	0.500	1.250	.064/.104	0.469	0.922	.051/.080
9/16	0.625	1.469	.086/.132	0.594	1.156	.074/.121
1/2	0.562	1.375	.086/.132	0.531	1.062	.074/.121
5/8	0.688	1.750	.108/.160	0.656	1.312	.074/.121
7/8	0.938	2.250	.136/.192	0.938	1.750	.108/.160
3/4	0.812	2.000	.122/.177	0.812	1.469	.108/.160
1	1.062	2.500	.136/.192	1.062	2.000	.108/.160
1 1/4	1.375	3.000	.136/.192	1.375	2.500	.136/.192
1 1/8	1.250	2.750	.136/.192	1.250	2.250	.108/.160
1 3/8	1.500	3.250	.153/.213	1.500	2.750	.136/.213
3	3.125	5.500	.249/.327	–	–	–
1 5/8	1.750	3.750	.153/.213	–	–	–
1 1/2	1.625	3.500	.153/.213	1.625	3.000	.153/.213
1 3/4	1.875	4.000	.153/.213	–	–	–
2	2.125	4.500	.153/.213	–	–	–
1 7/8	2.000	4.250	.153/.213	–	–	–
2 1/2	2.625	5.000	.210/.280	–	–	–
2 1/4	2.375	4.750	.320/.248	–	–	–
2 3/4	2.875	5.250	.228/.410S	–	–	–

Weight Chart Of Hastelloy B2 Fasteners

APPROX WEIGHT IN K.G. PER 1000 PIECE
Size	M10	M12	M16	M18	M20	M22	M24	M27	M30	M33	M36	M39	M42	M45	M48	M52	M56	M60	M64	M72
50	40.60	57.02	107.00	139.00	178.25	222.00	265.00	390.00	513.25	648.00	795.00	–	–	–	–	–	–	–	–	–
55	43.70	61.42	114.00	147.00	188.50	235.00	283.00	410.00	538.50	676.00	835.00	–	–	–	–	–	–	–	–	–
60	46.80	65.82	121.00	155.00	198.75	248.00	301.00	430.00	563.75	704.00	875.00	1087.00	–	–	–	–	–	–	–	–
65	49.90	70.22	128.00	163.00	209.00	261.00	319.00	450.00	589.00	732.00	915.00	1134.00	–	–	–	–	–	–	–	–
70	53.00	74.62	136.00	171.00	219.25	274.00	337.00	470.00	614.25	760.00	955.00	1181.00	1390.00	–	–	–	–	–	–	–
75	56.10	79.02	144.00	179.00	229.50	287.00	355.00	490.00	639.50	788.00	995.00	1228.00	1445.00	–	–	–	–	–	–	–
80	59.20	83.42	152.00	187.00	239.75	300.00	373.00	510.00	664.75	821.00	1035.00	1275.00	1500.00	1900.00	–	–	–	–	–	–
85	62.30	87.82	160.00	195.00	250.00	313.00	391.00	531.00	690.00	854.00	1075.00	1322.00	1555.00	1945.00	–	–	–	–	–	–
90	65.40	92.22	168.00	203.00	260.25	326.00	409.00	552.00	716.50	887.00	1115.00	1369.00	1610.00	1990.00	2220.00	–	–	–	–	–
95	68.50	96.62	176.00	211.00	270.50	339.00	427.00	573.00	743.00	920.00	1155.00	1416.00	1665.00	2035.00	2290.00	–	–	–	–	–
100	71.60	101.02	184.00	219.00	280.75	352.00	445.00	594.00	769.50	953.00	1195.00	1463.00	1720.00	2080.00	2360.00	2640.00	3400.00	–	–	–
110	77.80	110.00	200.00	237.00	301.25	377.00	481.00	636.00	824.75	1023.00	1250.00	1530.00	1824.00	2170.00	2500.00	2810.00	3590.00	4240.00	4910.00	–
120	84.00	119.00	216.00	253.00	321.75	402.00	517.00	678.00	880.00	1093.00	1330.00	1620.00	1928.00	2260.00	2640.00	2980.00	3780.00	4460.00	5160.00	6820.00
130	90.20	127.80	232.00	269.00	342.25	427.00	553.00	720.00	935.25	1163.00	1410.00	1710.00	2032.00	2350.00	2780.00	3150.00	3970.00	4680.00	5410.00	7130.00
140	96.40	136.60	248.00	285.00	362.75	452.00	589.00	762.00	990.25	1233.00	1490.00	1800.00	2136.00	2440.00	2920.00	3320.00	4160.00	4900.00	5660.00	7440.00
150	102.60	145.40	264.00	301.00	383.25	477.00	625.00	804.00	1045.75	1303.00	1570.00	1890.00	2240.00	2530.00	3060.00	3490.00	4350.00	5120.00	5910.00	7750.00
160	108.80	154.20	280.00	317.00	403.75	502.00	661.00	846.00	1101.00	1373.00	1650.00	1980.00	2344.00	2620.00	3200.00	3660.00	4540.00	5340.00	6160.00	8060.00
170	115.00	163.00	296.00	333.00	424.25	527.00	697.00	888.00	1156.25	1443.00	1730.00	2070.00	2448.00	2710.00	3340.00	3830.00	4730.00	5560.00	6410.00	8370.00
180	121.20	172.00	312.00	349.00	444.75	552.00	733.00	930.00	1211.50	1513.00	1810.00	2160.00	2552.00	2800.00	3480.00	4000.00	4920.00	5780.00	6660.00	8680.00
190	127.40	181.00	328.00	365.00	465.25	577.00	769.00	972.00	1266.75	1583.00	1890.00	2250.00	2656.00	2890.00	3620.00	4170.00	5110.00	6000.00	6910.00	8990.00
200	133.60	190.00	344.00	381.00	485.75	602.00	805.00	1014.00	1322.00	1653.00	1970.00	2340.00	2760.00	2980.00	3760.00	4340.00	5300.00	6220.00	7160.00	9300.00
210	139.80	199.00	360.00	397.00	506.25	627.00	841.00	1056.00	1377.25	1723.00	2050.00	2430.00	2864.00	3070.00	3900.00	4510.00	5490.00	6440.00	7410.00	9610.00
220	146.00	208.00	376.00	413.00	526.75	652.00	877.00	1098.00	1432.50	1793.00	2130.00	2520.00	2968.00	3160.00	4040.00	4680.00	5680.00	6660.00	7660.00	9920.00
230	152.20	217.00	392.00	429.00	547.25	677.00	913.00	1140.00	1487.75	1863.00	2210.00	2610.00	3072.00	3250.00	4180.00	4850.00	5870.00	6880.00	7910.00	10230.00
240	158.40	226.00	408.00	445.00	567.75	702.00	949.00	1182.00	1543.00	1933.00	2290.00	2700.00	3176.00	3340.00	4320.00	5020.00	6060.00	7100.00	8160.00	10540.00
250	164.60	235.00	424.00	461.00	588.25	727.00	985.00	1224.00	1598.25	2003.00	2370.00	2790.00	3280.00	3430.00	4460.00	5190.00	6250.00	7320.00	8410.00	10850.00
260	170.80	244.00	440.00	477.00	608.75	752.00	1021.00	1266.00	1653.50	2073.00	2450.00	2880.00	3384.00	3520.00	4600.00	5360.00	6440.00	7540.00	8660.00	11160.00
270	177.00	253.00	456.00	493.00	629.25	777.00	1057.00	1308.00	1708.75	2143.00	2530.00	2970.00	3488.00	3610.00	4740.00	5530.00	6630.00	7760.00	8910.00	11470.00
280	183.20	262.00	472.00	509.00	649.75	802.00	1093.00	1350.00	1764.00	2213.00	2610.00	3060.00	3592.00	3700.00	4880.00	5700.00	6820.00	7980.00	9160.00	11780.00
290	189.40	271.00	488.00	525.00	670.25	827.00	1129.00	1392.00	1819.25	2283.00	2690.00	3150.00	3696.00	3790.00	5020.00	5870.00	7010.00	8200.00	9410.00	12090.00
300	195.60	280.00	504.00	541.00	690.75	852.00	1165.00	1434.00	1874.50	2353.00	2770.00	3240.00	3800.00	3880.00	5160.00	6040.00	7200.00	8420.00	9660.00	12400.00
310	201.80	289.00	520.00	557.00	711.25	877.00	1201.00	1476.00	1929.75	2423.00	2850.00	3330.00	3904.00	3970.00	5300.00	6210.00	7390.00	8640.00	9910.00	12710.00
320	208.00	298.00	536.00	573.00	731.75	902.00	1237.00	1518.00	1985.00	2493.00	2930.00	3420.00	4008.00	4060.00	5440.00	6380.00	7580.00	8860.00	10160.00	13020.00
330	214.20	307.00	552.00	589.00	752.25	927.00	1273.00	1560.00	2040.25	2563.00	3010.00	3510.00	4112.00	4150.00	5580.00	6550.00	7770.00	9080.00	10410.00	13330.00
340	220.40	316.00	568.00	605.00	772.75	952.00	1309.00	1602.00	2095.50	2633.00	3090.00	3600.00	4216.00	4240.00	5720.00	6720.00	7960.00	9300.00	10660.00	13640.00
350	226.60	325.00	584.00	621.00	793.25	977.00	1345.00	1644.00	2150.75	2703.00	3170.00	3690.00	4320.00	4330.00	5860.00	6890.00	8150.00	9520.00	10910.00	13950.00
360	232.80	334.00	600.00	637.00	813.75	1002.00	1381.00	1686.00	2206.00	2773.00	3250.00	3780.00	4424.00	4420.00	6000.00	7060.00	8340.00	9740.00	11160.00	14260.00
370	239.00	343.00	616.00	653.00	834.25	1027.00	1417.00	1728.00	2261.25	2843.00	3330.00	3870.00	4528.00	4510.00	6140.00	7230.00	8530.00	9960.00	11410.00	14570.00
380	245.20	352.00	632.00	669.00	854.75	1052.00	1453.00	1770.00	2316.50	2913.00	3410.00	3960.00	4632.00	4600.00	6280.00	7400.00	8720.00	10180.00	11660.00	14880.00
390	251.40	361.00	648.00	685.00	875.25	1077.00	1489.00	1812.00	2371.75	2983.00	3490.00	4050.00	4736.00	4690.00	6420.00	7570.00	8910.00	10400.00	11910.00	15190.00
400	257.60	370.00	664.00	701.00	895.75	1102.00	1525.00	1854.00	2427.00	3053.00	3570.00	4140.00	4840.00	4780.00	6560.00	7740.00	9100.00	10620.00	12160.00	15500.00

Manufacturing Process of Hastelloy B2 Fasteners

Hastelloy B2 Fasteners Application

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